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        /*
      
         * Copyright (C) 2006 The Android Open Source Project
      
         *
      
         * Licensed under the Apache License, Version 2.0 (the "License");
      
         * you may not use this file except in compliance with the License.
      
         * You may obtain a copy of the License at
      
         *
      
         *      http://www.apache.org/licenses/LICENSE-2.0
      
         *
      
         * Unless required by applicable law or agreed to in writing, software
      
         * distributed under the License is distributed on an "AS IS" BASIS,
      
         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      
         * See the License for the specific language governing permissions and
      
         * limitations under the License.
      
         */
      
        package android.view;
      
        import android.animation.AnimatorInflater;
      
        import android.animation.StateListAnimator;
      
        import android.annotation.CallSuper;
      
        import android.annotation.ColorInt;
      
        import android.annotation.DrawableRes;
      
        import android.annotation.FloatRange;
      
        import android.annotation.IdRes;
      
        import android.annotation.IntDef;
      
        import android.annotation.LayoutRes;
      
        import android.annotation.NonNull;
      
        import android.annotation.Nullable;
      
        import android.annotation.Size;
      
        import android.annotation.UiThread;
      
        import android.content.ClipData;
      
        import android.content.Context;
      
        import android.content.ContextWrapper;
      
        import android.content.Intent;
      
        import android.content.res.ColorStateList;
      
        import android.content.res.Configuration;
      
        import android.content.res.Resources;
      
        import android.content.res.TypedArray;
      
        import android.graphics.Bitmap;
      
        import android.graphics.Canvas;
      
        import android.graphics.Insets;
      
        import android.graphics.Interpolator;
      
        import android.graphics.LinearGradient;
      
        import android.graphics.Matrix;
      
        import android.graphics.Outline;
      
        import android.graphics.Paint;
      
        import android.graphics.PixelFormat;
      
        import android.graphics.Point;
      
        import android.graphics.PorterDuff;
      
        import android.graphics.PorterDuffXfermode;
      
        import android.graphics.Rect;
      
        import android.graphics.RectF;
      
        import android.graphics.Region;
      
        import android.graphics.Shader;
      
        import android.graphics.drawable.ColorDrawable;
      
        import android.graphics.drawable.Drawable;
      
        import android.hardware.display.DisplayManagerGlobal;
      
        import android.os.Build.VERSION_CODES;
      
        import android.os.Bundle;
      
        import android.os.Handler;
      
        import android.os.IBinder;
      
        import android.os.Parcel;
      
        import android.os.Parcelable;
      
        import android.os.RemoteException;
      
        import android.os.SystemClock;
      
        import android.os.SystemProperties;
      
        import android.os.Trace;
      
        import android.text.TextUtils;
      
        import android.util.AttributeSet;
      
        import android.util.FloatProperty;
      
        import android.util.LayoutDirection;
      
        import android.util.Log;
      
        import android.util.LongSparseLongArray;
      
        import android.util.Pools.SynchronizedPool;
      
        import android.util.Property;
      
        import android.util.SparseArray;
      
        import android.util.StateSet;
      
        import android.util.SuperNotCalledException;
      
        import android.util.TypedValue;
      
        import android.view.ContextMenu.ContextMenuInfo;
      
        import android.view.AccessibilityIterators.TextSegmentIterator;
      
        import android.view.AccessibilityIterators.CharacterTextSegmentIterator;
      
        import android.view.AccessibilityIterators.WordTextSegmentIterator;
      
        import android.view.AccessibilityIterators.ParagraphTextSegmentIterator;
      
        import android.view.accessibility.AccessibilityEvent;
      
        import android.view.accessibility.AccessibilityEventSource;
      
        import android.view.accessibility.AccessibilityManager;
      
        import android.view.accessibility.AccessibilityNodeInfo;
      
        import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction;
      
        import android.view.accessibility.AccessibilityNodeProvider;
      
        import android.view.animation.Animation;
      
        import android.view.animation.AnimationUtils;
      
        import android.view.animation.Transformation;
      
        import android.view.inputmethod.EditorInfo;
      
        import android.view.inputmethod.InputConnection;
      
        import android.view.inputmethod.InputMethodManager;
      
        import android.widget.Checkable;
      
        import android.widget.FrameLayout;
      
        import android.widget.ScrollBarDrawable;
      
        import static android.os.Build.VERSION_CODES.*;
      
        import static java.lang.Math.max;
      
        import com.android.internal.R;
      
        import com.android.internal.util.Predicate;
      
        import com.android.internal.view.menu.MenuBuilder;
      
        import com.google.android.collect.Lists;
      
        import com.google.android.collect.Maps;
      
        import java.lang.annotation.Retention;
      
        import java.lang.annotation.RetentionPolicy;
      
        import java.lang.ref.WeakReference;
      
        import java.lang.reflect.Field;
      
        import java.lang.reflect.InvocationTargetException;
      
        import java.lang.reflect.Method;
      
        import java.lang.reflect.Modifier;
      
        import java.util.ArrayList;
      
        import java.util.Arrays;
      
        import java.util.Collections;
      
        import java.util.HashMap;
      
        import java.util.List;
      
        import java.util.Locale;
      
        import java.util.Map;
      
        import java.util.concurrent.CopyOnWriteArrayList;
      
        import java.util.concurrent.atomic.AtomicInteger;
      
        /**
      
         * <p>
      
         * This class represents the basic building block for user interface components. A View
      
         * occupies a rectangular area on the screen and is responsible for drawing and
      
         * event handling. View is the base class for <em>widgets</em>, which are
      
         * used to create interactive UI components (buttons, text fields, etc.). The
      
         * {@link android.view.ViewGroup} subclass is the base class for <em>layouts</em>, which
      
         * are invisible containers that hold other Views (or other ViewGroups) and define
      
         * their layout properties.
      
         * </p>
      
         *
      
         * <div class="special reference">
      
         * <h3>Developer Guides</h3>
      
         * <p>For information about using this class to develop your application's user interface,
      
         * read the <a href="{@docRoot}guide/topics/ui/index.html">User Interface</a> developer guide.
      
         * </div>
      
         *
      
         * <a name="Using"></a>
      
         * <h3>Using Views</h3>
      
         * <p>
      
         * All of the views in a window are arranged in a single tree. You can add views
      
         * either from code or by specifying a tree of views in one or more XML layout
      
         * files. There are many specialized subclasses of views that act as controls or
      
         * are capable of displaying text, images, or other content.
      
         * </p>
      
         * <p>
      
         * Once you have created a tree of views, there are typically a few types of
      
         * common operations you may wish to perform:
      
         * <ul>
      
         * <li><strong>Set properties:</strong> for example setting the text of a
      
         * {@link android.widget.TextView}. The available properties and the methods
      
         * that set them will vary among the different subclasses of views. Note that
      
         * properties that are known at build time can be set in the XML layout
      
         * files.</li>
      
         * <li><strong>Set focus:</strong> The framework will handled moving focus in
      
         * response to user input. To force focus to a specific view, call
      
         * {@link #requestFocus}.</li>
      
         * <li><strong>Set up listeners:</strong> Views allow clients to set listeners
      
         * that will be notified when something interesting happens to the view. For
      
         * example, all views will let you set a listener to be notified when the view
      
         * gains or loses focus. You can register such a listener using
      
         * {@link #setOnFocusChangeListener(android.view.View.OnFocusChangeListener)}.
      
         * Other view subclasses offer more specialized listeners. For example, a Button
      
         * exposes a listener to notify clients when the button is clicked.</li>
      
         * <li><strong>Set visibility:</strong> You can hide or show views using
      
         * {@link #setVisibility(int)}.</li>
      
         * </ul>
      
         * </p>
      
         * <p><em>
      
         * Note: The Android framework is responsible for measuring, laying out and
      
         * drawing views. You should not call methods that perform these actions on
      
         * views yourself unless you are actually implementing a
      
         * {@link android.view.ViewGroup}.
      
         * </em></p>
      
         *
      
         * <a name="Lifecycle"></a>
      
         * <h3>Implementing a Custom View</h3>
      
         *
      
         * <p>
      
         * To implement a custom view, you will usually begin by providing overrides for
      
         * some of the standard methods that the framework calls on all views. You do
      
         * not need to override all of these methods. In fact, you can start by just
      
         * overriding {@link #onDraw(android.graphics.Canvas)}.
      
         * <table border="2" width="85%" align="center" cellpadding="5">
      
         *     <thead>
      
         *         <tr><th>Category</th> <th>Methods</th> <th>Description</th></tr>
      
         *     </thead>
      
         *
      
         *     <tbody>
      
         *     <tr>
      
         *         <td rowspan="2">Creation</td>
      
         *         <td>Constructors</td>
      
         *         <td>There is a form of the constructor that are called when the view
      
         *         is created from code and a form that is called when the view is
      
         *         inflated from a layout file. The second form should parse and apply
      
         *         any attributes defined in the layout file.
      
         *         </td>
      
         *     </tr>
      
         *     <tr>
      
         *         <td><code>{@link #onFinishInflate()}</code></td>
      
         *         <td>Called after a view and all of its children has been inflated
      
         *         from XML.</td>
      
         *     </tr>
      
         *
      
         *     <tr>
      
         *         <td rowspan="3">Layout</td>
      
         *         <td><code>{@link #onMeasure(int, int)}</code></td>
      
         *         <td>Called to determine the size requirements for this view and all
      
         *         of its children.
      
         *         </td>
      
         *     </tr>
      
         *     <tr>
      
         *         <td><code>{@link #onLayout(boolean, int, int, int, int)}</code></td>
      
         *         <td>Called when this view should assign a size and position to all
      
         *         of its children.
      
         *         </td>
      
         *     </tr>
      
         *     <tr>
      
         *         <td><code>{@link #onSizeChanged(int, int, int, int)}</code></td>
      
         *         <td>Called when the size of this view has changed.
      
         *         </td>
      
         *     </tr>
      
         *
      
         *     <tr>
      
         *         <td>Drawing</td>
      
         *         <td><code>{@link #onDraw(android.graphics.Canvas)}</code></td>
      
         *         <td>Called when the view should render its content.
      
         *         </td>
      
         *     </tr>
      
         *
      
         *     <tr>
      
         *         <td rowspan="4">Event processing</td>
      
         *         <td><code>{@link #onKeyDown(int, KeyEvent)}</code></td>
      
         *         <td>Called when a new hardware key event occurs.
      
         *         </td>
      
         *     </tr>
      
         *     <tr>
      
         *         <td><code>{@link #onKeyUp(int, KeyEvent)}</code></td>
      
         *         <td>Called when a hardware key up event occurs.
      
         *         </td>
      
         *     </tr>
      
         *     <tr>
      
         *         <td><code>{@link #onTrackballEvent(MotionEvent)}</code></td>
      
         *         <td>Called when a trackball motion event occurs.
      
         *         </td>
      
         *     </tr>
      
         *     <tr>
      
         *         <td><code>{@link #onTouchEvent(MotionEvent)}</code></td>
      
         *         <td>Called when a touch screen motion event occurs.
      
         *         </td>
      
         *     </tr>
      
         *
      
         *     <tr>
      
         *         <td rowspan="2">Focus</td>
      
         *         <td><code>{@link #onFocusChanged(boolean, int, android.graphics.Rect)}</code></td>
      
         *         <td>Called when the view gains or loses focus.
      
         *         </td>
      
         *     </tr>
      
         *
      
         *     <tr>
      
         *         <td><code>{@link #onWindowFocusChanged(boolean)}</code></td>
      
         *         <td>Called when the window containing the view gains or loses focus.
      
         *         </td>
      
         *     </tr>
      
         *
      
         *     <tr>
      
         *         <td rowspan="3">Attaching</td>
      
         *         <td><code>{@link #onAttachedToWindow()}</code></td>
      
         *         <td>Called when the view is attached to a window.
      
         *         </td>
      
         *     </tr>
      
         *
      
         *     <tr>
      
         *         <td><code>{@link #onDetachedFromWindow}</code></td>
      
         *         <td>Called when the view is detached from its window.
      
         *         </td>
      
         *     </tr>
      
         *
      
         *     <tr>
      
         *         <td><code>{@link #onWindowVisibilityChanged(int)}</code></td>
      
         *         <td>Called when the visibility of the window containing the view
      
         *         has changed.
      
         *         </td>
      
         *     </tr>
      
         *     </tbody>
      
         *
      
         * </table>
      
         * </p>
      
         *
      
         * <a name="IDs"></a>
      
         * <h3>IDs</h3>
      
         * Views may have an integer id associated with them. These ids are typically
      
         * assigned in the layout XML files, and are used to find specific views within
      
         * the view tree. A common pattern is to:
      
         * <ul>
      
         * <li>Define a Button in the layout file and assign it a unique ID.
      
         * <pre>
      
         * &lt;Button
      
         *     android:id="@+id/my_button"
      
         *     android:layout_width="wrap_content"
      
         *     android:layout_height="wrap_content"
      
         *     android:text="@string/my_button_text"/&gt;
      
         * </pre></li>
      
         * <li>From the onCreate method of an Activity, find the Button
      
         * <pre class="prettyprint">
      
         *      Button myButton = (Button) findViewById(R.id.my_button);
      
         * </pre></li>
      
         * </ul>
      
         * <p>
      
         * View IDs need not be unique throughout the tree, but it is good practice to
      
         * ensure that they are at least unique within the part of the tree you are
      
         * searching.
      
         * </p>
      
         *
      
         * <a name="Position"></a>
      
         * <h3>Position</h3>
      
         * <p>
      
         * The geometry of a view is that of a rectangle. A view has a location,
      
         * expressed as a pair of <em>left</em> and <em>top</em> coordinates, and
      
         * two dimensions, expressed as a width and a height. The unit for location
      
         * and dimensions is the pixel.
      
         * </p>
      
         *
      
         * <p>
      
         * It is possible to retrieve the location of a view by invoking the methods
      
         * {@link #getLeft()} and {@link #getTop()}. The former returns the left, or X,
      
         * coordinate of the rectangle representing the view. The latter returns the
      
         * top, or Y, coordinate of the rectangle representing the view. These methods
      
         * both return the location of the view relative to its parent. For instance,
      
         * when getLeft() returns 20, that means the view is located 20 pixels to the
      
         * right of the left edge of its direct parent.
      
         * </p>
      
         *
      
         * <p>
      
         * In addition, several convenience methods are offered to avoid unnecessary
      
         * computations, namely {@link #getRight()} and {@link #getBottom()}.
      
         * These methods return the coordinates of the right and bottom edges of the
      
         * rectangle representing the view. For instance, calling {@link #getRight()}
      
         * is similar to the following computation: <code>getLeft() + getWidth()</code>
      
         * (see <a href="#SizePaddingMargins">Size</a> for more information about the width.)
      
         * </p>
      
         *
      
         * <a name="SizePaddingMargins"></a>
      
         * <h3>Size, padding and margins</h3>
      
         * <p>
      
         * The size of a view is expressed with a width and a height. A view actually
      
         * possess two pairs of width and height values.
      
         * </p>
      
         *
      
         * <p>
      
         * The first pair is known as <em>measured width</em> and
      
         * <em>measured height</em>. These dimensions define how big a view wants to be
      
         * within its parent (see <a href="#Layout">Layout</a> for more details.) The
      
         * measured dimensions can be obtained by calling {@link #getMeasuredWidth()}
      
         * and {@link #getMeasuredHeight()}.
      
         * </p>
      
         *
      
         * <p>
      
         * The second pair is simply known as <em>width</em> and <em>height</em>, or
      
         * sometimes <em>drawing width</em> and <em>drawing height</em>. These
      
         * dimensions define the actual size of the view on screen, at drawing time and
      
         * after layout. These values may, but do not have to, be different from the
      
         * measured width and height. The width and height can be obtained by calling
      
         * {@link #getWidth()} and {@link #getHeight()}.
      
         * </p>
      
         *
      
         * <p>
      
         * To measure its dimensions, a view takes into account its padding. The padding
      
         * is expressed in pixels for the left, top, right and bottom parts of the view.
      
         * Padding can be used to offset the content of the view by a specific amount of
      
         * pixels. For instance, a left padding of 2 will push the view's content by
      
         * 2 pixels to the right of the left edge. Padding can be set using the
      
         * {@link #setPadding(int, int, int, int)} or {@link #setPaddingRelative(int, int, int, int)}
      
         * method and queried by calling {@link #getPaddingLeft()}, {@link #getPaddingTop()},
      
         * {@link #getPaddingRight()}, {@link #getPaddingBottom()}, {@link #getPaddingStart()},
      
         * {@link #getPaddingEnd()}.
      
         * </p>
      
         *
      
         * <p>
      
         * Even though a view can define a padding, it does not provide any support for
      
         * margins. However, view groups provide such a support. Refer to
      
         * {@link android.view.ViewGroup} and
      
         * {@link android.view.ViewGroup.MarginLayoutParams} for further information.
      
         * </p>
      
         *
      
         * <a name="Layout"></a>
      
         * <h3>Layout</h3>
      
         * <p>
      
         * Layout is a two pass process: a measure pass and a layout pass. The measuring
      
         * pass is implemented in {@link #measure(int, int)} and is a top-down traversal
      
         * of the view tree. Each view pushes dimension specifications down the tree
      
         * during the recursion. At the end of the measure pass, every view has stored
      
         * its measurements. The second pass happens in
      
         * {@link #layout(int,int,int,int)} and is also top-down. During
      
         * this pass each parent is responsible for positioning all of its children
      
         * using the sizes computed in the measure pass.
      
         * </p>
      
         *
      
         * <p>
      
         * When a view's measure() method returns, its {@link #getMeasuredWidth()} and
      
         * {@link #getMeasuredHeight()} values must be set, along with those for all of
      
         * that view's descendants. A view's measured width and measured height values
      
         * must respect the constraints imposed by the view's parents. This guarantees
      
         * that at the end of the measure pass, all parents accept all of their
      
         * children's measurements. A parent view may call measure() more than once on
      
         * its children. For example, the parent may measure each child once with
      
         * unspecified dimensions to find out how big they want to be, then call
      
         * measure() on them again with actual numbers if the sum of all the children's
      
         * unconstrained sizes is too big or too small.
      
         * </p>
      
         *
      
         * <p>
      
         * The measure pass uses two classes to communicate dimensions. The
      
         * {@link MeasureSpec} class is used by views to tell their parents how they
      
         * want to be measured and positioned. The base LayoutParams class just
      
         * describes how big the view wants to be for both width and height. For each
      
         * dimension, it can specify one of:
      
         * <ul>
      
         * <li> an exact number
      
         * <li>MATCH_PARENT, which means the view wants to be as big as its parent
      
         * (minus padding)
      
         * <li> WRAP_CONTENT, which means that the view wants to be just big enough to
      
         * enclose its content (plus padding).
      
         * </ul>
      
         * There are subclasses of LayoutParams for different subclasses of ViewGroup.
      
         * For example, AbsoluteLayout has its own subclass of LayoutParams which adds
      
         * an X and Y value.
      
         * </p>
      
         *
      
         * <p>
      
         * MeasureSpecs are used to push requirements down the tree from parent to
      
         * child. A MeasureSpec can be in one of three modes:
      
         * <ul>
      
         * <li>UNSPECIFIED: This is used by a parent to determine the desired dimension
      
         * of a child view. For example, a LinearLayout may call measure() on its child
      
         * with the height set to UNSPECIFIED and a width of EXACTLY 240 to find out how
      
         * tall the child view wants to be given a width of 240 pixels.
      
         * <li>EXACTLY: This is used by the parent to impose an exact size on the
      
         * child. The child must use this size, and guarantee that all of its
      
         * descendants will fit within this size.
      
         * <li>AT_MOST: This is used by the parent to impose a maximum size on the
      
         * child. The child must guarantee that it and all of its descendants will fit
      
         * within this size.
      
         * </ul>
      
         * </p>
      
         *
      
         * <p>
      
         * To initiate a layout, call {@link #requestLayout}. This method is typically
      
         * called by a view on itself when it believes that is can no longer fit within
      
         * its current bounds.
      
         * </p>
      
         *
      
         * <a name="Drawing"></a>
      
         * <h3>Drawing</h3>
      
         * <p>
      
         * Drawing is handled by walking the tree and recording the drawing commands of
      
         * any View that needs to update. After this, the drawing commands of the
      
         * entire tree are issued to screen, clipped to the newly damaged area.
      
         * </p>
      
         *
      
         * <p>
      
         * The tree is largely recorded and drawn in order, with parents drawn before
      
         * (i.e., behind) their children, with siblings drawn in the order they appear
      
         * in the tree. If you set a background drawable for a View, then the View will
      
         * draw it before calling back to its <code>onDraw()</code> method. The child
      
         * drawing order can be overridden with
      
         * {@link ViewGroup#setChildrenDrawingOrderEnabled(boolean) custom child drawing order}
      
         * in a ViewGroup, and with {@link #setZ(float)} custom Z values} set on Views.
      
         * </p>
      
         *
      
         * <p>
      
         * To force a view to draw, call {@link #invalidate()}.
      
         * </p>
      
         *
      
         * <a name="EventHandlingThreading"></a>
      
         * <h3>Event Handling and Threading</h3>
      
         * <p>
      
         * The basic cycle of a view is as follows:
      
         * <ol>
      
         * <li>An event comes in and is dispatched to the appropriate view. The view
      
         * handles the event and notifies any listeners.</li>
      
         * <li>If in the course of processing the event, the view's bounds may need
      
         * to be changed, the view will call {@link #requestLayout()}.</li>
      
         * <li>Similarly, if in the course of processing the event the view's appearance
      
         * may need to be changed, the view will call {@link #invalidate()}.</li>
      
         * <li>If either {@link #requestLayout()} or {@link #invalidate()} were called,
      
         * the framework will take care of measuring, laying out, and drawing the tree
      
         * as appropriate.</li>
      
         * </ol>
      
         * </p>
      
         *
      
         * <p><em>Note: The entire view tree is single threaded. You must always be on
      
         * the UI thread when calling any method on any view.</em>
      
         * If you are doing work on other threads and want to update the state of a view
      
         * from that thread, you should use a {@link Handler}.
      
         * </p>
      
         *
      
         * <a name="FocusHandling"></a>
      
         * <h3>Focus Handling</h3>
      
         * <p>
      
         * The framework will handle routine focus movement in response to user input.
      
         * This includes changing the focus as views are removed or hidden, or as new
      
         * views become available. Views indicate their willingness to take focus
      
         * through the {@link #isFocusable} method. To change whether a view can take
      
         * focus, call {@link #setFocusable(boolean)}.  When in touch mode (see notes below)
      
         * views indicate whether they still would like focus via {@link #isFocusableInTouchMode}
      
         * and can change this via {@link #setFocusableInTouchMode(boolean)}.
      
         * </p>
      
         * <p>
      
         * Focus movement is based on an algorithm which finds the nearest neighbor in a
      
         * given direction. In rare cases, the default algorithm may not match the
      
         * intended behavior of the developer. In these situations, you can provide
      
         * explicit overrides by using these XML attributes in the layout file:
      
         * <pre>
      
         * nextFocusDown
      
         * nextFocusLeft
      
         * nextFocusRight
      
         * nextFocusUp
      
         * </pre>
      
         * </p>
      
         *
      
         *
      
         * <p>
      
         * To get a particular view to take focus, call {@link #requestFocus()}.
      
         * </p>
      
         *
      
         * <a name="TouchMode"></a>
      
         * <h3>Touch Mode</h3>
      
         * <p>
      
         * When a user is navigating a user interface via directional keys such as a D-pad, it is
      
         * necessary to give focus to actionable items such as buttons so the user can see
      
         * what will take input.  If the device has touch capabilities, however, and the user
      
         * begins interacting with the interface by touching it, it is no longer necessary to
      
         * always highlight, or give focus to, a particular view.  This motivates a mode
      
         * for interaction named 'touch mode'.
      
         * </p>
      
         * <p>
      
         * For a touch capable device, once the user touches the screen, the device
      
         * will enter touch mode.  From this point onward, only views for which
      
         * {@link #isFocusableInTouchMode} is true will be focusable, such as text editing widgets.
      
         * Other views that are touchable, like buttons, will not take focus when touched; they will
      
         * only fire the on click listeners.
      
         * </p>
      
         * <p>
      
         * Any time a user hits a directional key, such as a D-pad direction, the view device will
      
         * exit touch mode, and find a view to take focus, so that the user may resume interacting
      
         * with the user interface without touching the screen again.
      
         * </p>
      
         * <p>
      
         * The touch mode state is maintained across {@link android.app.Activity}s.  Call
      
         * {@link #isInTouchMode} to see whether the device is currently in touch mode.
      
         * </p>
      
         *
      
         * <a name="Scrolling"></a>
      
         * <h3>Scrolling</h3>
      
         * <p>
      
         * The framework provides basic support for views that wish to internally
      
         * scroll their content. This includes keeping track of the X and Y scroll
      
         * offset as well as mechanisms for drawing scrollbars. See
      
         * {@link #scrollBy(int, int)}, {@link #scrollTo(int, int)}, and
      
         * {@link #awakenScrollBars()} for more details.
      
         * </p>
      
         *
      
         * <a name="Tags"></a>
      
         * <h3>Tags</h3>
      
         * <p>
      
         * Unlike IDs, tags are not used to identify views. Tags are essentially an
      
         * extra piece of information that can be associated with a view. They are most
      
         * often used as a convenience to store data related to views in the views
      
         * themselves rather than by putting them in a separate structure.
      
         * </p>
      
         *
      
         * <a name="Properties"></a>
      
         * <h3>Properties</h3>
      
         * <p>
      
         * The View class exposes an {@link #ALPHA} property, as well as several transform-related
      
         * properties, such as {@link #TRANSLATION_X} and {@link #TRANSLATION_Y}. These properties are
      
         * available both in the {@link Property} form as well as in similarly-named setter/getter
      
         * methods (such as {@link #setAlpha(float)} for {@link #ALPHA}). These properties can
      
         * be used to set persistent state associated with these rendering-related properties on the view.
      
         * The properties and methods can also be used in conjunction with
      
         * {@link android.animation.Animator Animator}-based animations, described more in the
      
         * <a href="#Animation">Animation</a> section.
      
         * </p>
      
         *
      
         * <a name="Animation"></a>
      
         * <h3>Animation</h3>
      
         * <p>
      
         * Starting with Android 3.0, the preferred way of animating views is to use the
      
         * {@link android.animation} package APIs. These {@link android.animation.Animator Animator}-based
      
         * classes change actual properties of the View object, such as {@link #setAlpha(float) alpha} and
      
         * {@link #setTranslationX(float) translationX}. This behavior is contrasted to that of the pre-3.0
      
         * {@link android.view.animation.Animation Animation}-based classes, which instead animate only
      
         * how the view is drawn on the display. In particular, the {@link ViewPropertyAnimator} class
      
         * makes animating these View properties particularly easy and efficient.
      
         * </p>
      
         * <p>
      
         * Alternatively, you can use the pre-3.0 animation classes to animate how Views are rendered.
      
         * You can attach an {@link Animation} object to a view using
      
         * {@link #setAnimation(Animation)} or
      
         * {@link #startAnimation(Animation)}. The animation can alter the scale,
      
         * rotation, translation and alpha of a view over time. If the animation is
      
         * attached to a view that has children, the animation will affect the entire
      
         * subtree rooted by that node. When an animation is started, the framework will
      
         * take care of redrawing the appropriate views until the animation completes.
      
         * </p>
      
         *
      
         * <a name="Security"></a>
      
         * <h3>Security</h3>
      
         * <p>
      
         * Sometimes it is essential that an application be able to verify that an action
      
         * is being performed with the full knowledge and consent of the user, such as
      
         * granting a permission request, making a purchase or clicking on an advertisement.
      
         * Unfortunately, a malicious application could try to spoof the user into
      
         * performing these actions, unaware, by concealing the intended purpose of the view.
      
         * As a remedy, the framework offers a touch filtering mechanism that can be used to
      
         * improve the security of views that provide access to sensitive functionality.
      
         * </p><p>
      
         * To enable touch filtering, call {@link #setFilterTouchesWhenObscured(boolean)} or set the
      
         * android:filterTouchesWhenObscured layout attribute to true.  When enabled, the framework
      
         * will discard touches that are received whenever the view's window is obscured by
      
         * another visible window.  As a result, the view will not receive touches whenever a
      
         * toast, dialog or other window appears above the view's window.
      
         * </p><p>
      
         * For more fine-grained control over security, consider overriding the
      
         * {@link #onFilterTouchEventForSecurity(MotionEvent)} method to implement your own
      
         * security policy. See also {@link MotionEvent#FLAG_WINDOW_IS_OBSCURED}.
      
         * </p>
      
         *
      
         * @attr ref android.R.styleable#View_alpha
      
         * @attr ref android.R.styleable#View_background
      
         * @attr ref android.R.styleable#View_clickable
      
         * @attr ref android.R.styleable#View_contentDescription
      
         * @attr ref android.R.styleable#View_drawingCacheQuality
      
         * @attr ref android.R.styleable#View_duplicateParentState
      
         * @attr ref android.R.styleable#View_id
      
         * @attr ref android.R.styleable#View_requiresFadingEdge
      
         * @attr ref android.R.styleable#View_fadeScrollbars
      
         * @attr ref android.R.styleable#View_fadingEdgeLength
      
         * @attr ref android.R.styleable#View_filterTouchesWhenObscured
      
         * @attr ref android.R.styleable#View_fitsSystemWindows
      
         * @attr ref android.R.styleable#View_isScrollContainer
      
         * @attr ref android.R.styleable#View_focusable
      
         * @attr ref android.R.styleable#View_focusableInTouchMode
      
         * @attr ref android.R.styleable#View_hapticFeedbackEnabled
      
         * @attr ref android.R.styleable#View_keepScreenOn
      
         * @attr ref android.R.styleable#View_layerType
      
         * @attr ref android.R.styleable#View_layoutDirection
      
         * @attr ref android.R.styleable#View_longClickable
      
         * @attr ref android.R.styleable#View_minHeight
      
         * @attr ref android.R.styleable#View_minWidth
      
         * @attr ref android.R.styleable#View_nextFocusDown
      
         * @attr ref android.R.styleable#View_nextFocusLeft
      
         * @attr ref android.R.styleable#View_nextFocusRight
      
         * @attr ref android.R.styleable#View_nextFocusUp
      
         * @attr ref android.R.styleable#View_onClick
      
         * @attr ref android.R.styleable#View_padding
      
         * @attr ref android.R.styleable#View_paddingBottom
      
         * @attr ref android.R.styleable#View_paddingLeft
      
         * @attr ref android.R.styleable#View_paddingRight
      
         * @attr ref android.R.styleable#View_paddingTop
      
         * @attr ref android.R.styleable#View_paddingStart
      
         * @attr ref android.R.styleable#View_paddingEnd
      
         * @attr ref android.R.styleable#View_saveEnabled
      
         * @attr ref android.R.styleable#View_rotation
      
         * @attr ref android.R.styleable#View_rotationX
      
         * @attr ref android.R.styleable#View_rotationY
      
         * @attr ref android.R.styleable#View_scaleX
      
         * @attr ref android.R.styleable#View_scaleY
      
         * @attr ref android.R.styleable#View_scrollX
      
         * @attr ref android.R.styleable#View_scrollY
      
         * @attr ref android.R.styleable#View_scrollbarSize
      
         * @attr ref android.R.styleable#View_scrollbarStyle
      
         * @attr ref android.R.styleable#View_scrollbars
      
         * @attr ref android.R.styleable#View_scrollbarDefaultDelayBeforeFade
      
         * @attr ref android.R.styleable#View_scrollbarFadeDuration
      
         * @attr ref android.R.styleable#View_scrollbarTrackHorizontal
      
         * @attr ref android.R.styleable#View_scrollbarThumbHorizontal
      
         * @attr ref android.R.styleable#View_scrollbarThumbVertical
      
         * @attr ref android.R.styleable#View_scrollbarTrackVertical
      
         * @attr ref android.R.styleable#View_scrollbarAlwaysDrawHorizontalTrack
      
         * @attr ref android.R.styleable#View_scrollbarAlwaysDrawVerticalTrack
      
         * @attr ref android.R.styleable#View_stateListAnimator
      
         * @attr ref android.R.styleable#View_transitionName
      
         * @attr ref android.R.styleable#View_soundEffectsEnabled
      
         * @attr ref android.R.styleable#View_tag
      
         * @attr ref android.R.styleable#View_textAlignment
      
         * @attr ref android.R.styleable#View_textDirection
      
         * @attr ref android.R.styleable#View_transformPivotX
      
         * @attr ref android.R.styleable#View_transformPivotY
      
         * @attr ref android.R.styleable#View_translationX
      
         * @attr ref android.R.styleable#View_translationY
      
         * @attr ref android.R.styleable#View_translationZ
      
         * @attr ref android.R.styleable#View_visibility
      
         *
      
         * @see android.view.ViewGroup
      
         */
      
        @UiThread
      
        public class View implements Drawable.Callback, KeyEvent.Callback,
      
                AccessibilityEventSource {
      
            private static final boolean DBG = false;
      
            /**
      
             * The logging tag used by this class with android.util.Log.
      
             */
      
            protected static final String VIEW_LOG_TAG = "View";
      
            /**
      
             * When set to true, apps will draw debugging information about their layouts.
      
             *
      
             * @hide
      
             */
      
            public static final String DEBUG_LAYOUT_PROPERTY = "debug.layout";
      
            /**
      
             * When set to true, this view will save its attribute data.
      
             *
      
             * @hide
      
             */
      
            public static boolean mDebugViewAttributes = false;
      
            /**
      
             * Used to mark a View that has no ID.
      
             */
      
            public static final int NO_ID = -1;
      
            /**
      
             * Signals that compatibility booleans have been initialized according to
      
             * target SDK versions.
      
             */
      
            private static boolean sCompatibilityDone = false;
      
            /**
      
             * Use the old (broken) way of building MeasureSpecs.
      
             */
      
            private static boolean sUseBrokenMakeMeasureSpec = false;
      
            /**
      
             * Always return a size of 0 for MeasureSpec values with a mode of UNSPECIFIED
      
             */
      
            static boolean sUseZeroUnspecifiedMeasureSpec = false;
      
            /**
      
             * Ignore any optimizations using the measure cache.
      
             */
      
            private static boolean sIgnoreMeasureCache = false;
      
            /**
      
             * This view does not want keystrokes. Use with TAKES_FOCUS_MASK when
      
             * calling setFlags.
      
             */
      
            private static final int NOT_FOCUSABLE = 0x00000000;
      
            /**
      
             * This view wants keystrokes. Use with TAKES_FOCUS_MASK when calling
      
             * setFlags.
      
             */
      
            private static final int FOCUSABLE = 0x00000001;
      
            /**
      
             * Mask for use with setFlags indicating bits used for focus.
      
             */
      
            private static final int FOCUSABLE_MASK = 0x00000001;
      
            /**
      
             * This view will adjust its padding to fit sytem windows (e.g. status bar)
      
             */
      
            private static final int FITS_SYSTEM_WINDOWS = 0x00000002;
      
            /** @hide */
      
            @IntDef({VISIBLE, INVISIBLE, GONE})
      
            @Retention(RetentionPolicy.SOURCE)
      
            public @interface Visibility {}
      
            /**
      
             * This view is visible.
      
             * Use with {@link #setVisibility} and <a href="#attr_android:visibility">{@code
      
             * android:visibility}.
      
             */
      
            public static final int VISIBLE = 0x00000000;
      
            /**
      
             * This view is invisible, but it still takes up space for layout purposes.
      
             * Use with {@link #setVisibility} and <a href="#attr_android:visibility">{@code
      
             * android:visibility}.
      
             */
      
            public static final int INVISIBLE = 0x00000004;
      
            /**
      
             * This view is invisible, and it doesn't take any space for layout
      
             * purposes. Use with {@link #setVisibility} and <a href="#attr_android:visibility">{@code
      
             * android:visibility}.
      
             */
      
            public static final int GONE = 0x00000008;
      
            /**
      
             * Mask for use with setFlags indicating bits used for visibility.
      
             * {@hide}
      
             */
      
            static final int VISIBILITY_MASK = 0x0000000C;
      
            private static final int[] VISIBILITY_FLAGS = {VISIBLE, INVISIBLE, GONE};
      
            /**
      
             * This view is enabled. Interpretation varies by subclass.
      
             * Use with ENABLED_MASK when calling setFlags.
      
             * {@hide}
      
             */
      
            static final int ENABLED = 0x00000000;
      
            /**
      
             * This view is disabled. Interpretation varies by subclass.
      
             * Use with ENABLED_MASK when calling setFlags.
      
             * {@hide}
      
             */
      
            static final int DISABLED = 0x00000020;
      
           /**
      
            * Mask for use with setFlags indicating bits used for indicating whether
      
            * this view is enabled
      
            * {@hide}
      
            */
      
            static final int ENABLED_MASK = 0x00000020;
      
            /**
      
             * This view won't draw. {@link #onDraw(android.graphics.Canvas)} won't be
      
             * called and further optimizations will be performed. It is okay to have
      
             * this flag set and a background. Use with DRAW_MASK when calling setFlags.
      
             * {@hide}
      
             */
      
            static final int WILL_NOT_DRAW = 0x00000080;
      
            /**
      
             * Mask for use with setFlags indicating bits used for indicating whether
      
             * this view is will draw
      
             * {@hide}
      
             */
      
            static final int DRAW_MASK = 0x00000080;
      
            /**
      
             * <p>This view doesn't show scrollbars.</p>
      
             * {@hide}
      
             */
      
            static final int SCROLLBARS_NONE = 0x00000000;
      
            /**
      
             * <p>This view shows horizontal scrollbars.</p>
      
             * {@hide}
      
             */
      
            static final int SCROLLBARS_HORIZONTAL = 0x00000100;
      
            /**
      
             * <p>This view shows vertical scrollbars.</p>
      
             * {@hide}
      
             */
      
            static final int SCROLLBARS_VERTICAL = 0x00000200;
      
            /**
      
             * <p>Mask for use with setFlags indicating bits used for indicating which
      
             * scrollbars are enabled.</p>
      
             * {@hide}
      
             */
      
            static final int SCROLLBARS_MASK = 0x00000300;
      
            /**
      
             * Indicates that the view should filter touches when its window is obscured.
      
             * Refer to the class comments for more information about this security feature.
      
             * {@hide}
      
             */
      
            static final int FILTER_TOUCHES_WHEN_OBSCURED = 0x00000400;
      
            /**
      
             * Set for framework elements that use FITS_SYSTEM_WINDOWS, to indicate
      
             * that they are optional and should be skipped if the window has
      
             * requested system UI flags that ignore those insets for layout.
      
             */
      
            static final int OPTIONAL_FITS_SYSTEM_WINDOWS = 0x00000800;
      
            /**
      
             * <p>This view doesn't show fading edges.</p>
      
             * {@hide}
      
             */
      
            static final int FADING_EDGE_NONE = 0x00000000;
      
            /**
      
             * <p>This view shows horizontal fading edges.</p>
      
             * {@hide}
      
             */
      
            static final int FADING_EDGE_HORIZONTAL = 0x00001000;
      
            /**
      
             * <p>This view shows vertical fading edges.</p>
      
             * {@hide}
      
             */
      
            static final int FADING_EDGE_VERTICAL = 0x00002000;
      
            /**
      
             * <p>Mask for use with setFlags indicating bits used for indicating which
      
             * fading edges are enabled.</p>
      
             * {@hide}
      
             */
      
            static final int FADING_EDGE_MASK = 0x00003000;
      
            /**
      
             * <p>Indicates this view can be clicked. When clickable, a View reacts
      
             * to clicks by notifying the OnClickListener.<p>
      
             * {@hide}
      
             */
      
            static final int CLICKABLE = 0x00004000;
      
            /**
      
             * <p>Indicates this view is caching its drawing into a bitmap.</p>
      
             * {@hide}
      
             */
      
            static final int DRAWING_CACHE_ENABLED = 0x00008000;
      
            /**
      
             * <p>Indicates that no icicle should be saved for this view.<p>
      
             * {@hide}
      
             */
      
            static final int SAVE_DISABLED = 0x000010000;
      
            /**
      
             * <p>Mask for use with setFlags indicating bits used for the saveEnabled
      
             * property.</p>
      
             * {@hide}
      
             */
      
            static final int SAVE_DISABLED_MASK = 0x000010000;
      
            /**
      
             * <p>Indicates that no drawing cache should ever be created for this view.<p>
      
             * {@hide}
      
             */
      
            static final int WILL_NOT_CACHE_DRAWING = 0x000020000;
      
            /**
      
             * <p>Indicates this view can take / keep focus when int touch mode.</p>
      
             * {@hide}
      
             */
      
            static final int FOCUSABLE_IN_TOUCH_MODE = 0x00040000;
      
            /** @hide */
      
            @Retention(RetentionPolicy.SOURCE)
      
            @IntDef({DRAWING_CACHE_QUALITY_LOW, DRAWING_CACHE_QUALITY_HIGH, DRAWING_CACHE_QUALITY_AUTO})
      
            public @interface DrawingCacheQuality {}
      
            /**
      
             * <p>Enables low quality mode for the drawing cache.</p>
      
             */
      
            public static final int DRAWING_CACHE_QUALITY_LOW = 0x00080000;
      
            /**
      
             * <p>Enables high quality mode for the drawing cache.</p>
      
             */
      
            public static final int DRAWING_CACHE_QUALITY_HIGH = 0x00100000;
      
            /**
      
             * <p>Enables automatic quality mode for the drawing cache.</p>
      
             */
      
            public static final int DRAWING_CACHE_QUALITY_AUTO = 0x00000000;
      
            private static final int[] DRAWING_CACHE_QUALITY_FLAGS = {
      
                    DRAWING_CACHE_QUALITY_AUTO, DRAWING_CACHE_QUALITY_LOW, DRAWING_CACHE_QUALITY_HIGH
      
            };
      
            /**
      
             * <p>Mask for use with setFlags indicating bits used for the cache
      
             * quality property.</p>
      
             * {@hide}
      
             */
      
            static final int DRAWING_CACHE_QUALITY_MASK = 0x00180000;
      
            /**
      
             * <p>
      
             * Indicates this view can be long clicked. When long clickable, a View
      
             * reacts to long clicks by notifying the OnLongClickListener or showing a
      
             * context menu.
      
             * </p>
      
             * {@hide}
      
             */
      
            static final int LONG_CLICKABLE = 0x00200000;
      
            /**
      
             * <p>Indicates that this view gets its drawable states from its direct parent
      
             * and ignores its original internal states.</p>
      
             *
      
             * @hide
      
             */
      
            static final int DUPLICATE_PARENT_STATE = 0x00400000;
      
            /**
      
             * <p>
      
             * Indicates this view can be context clicked. When context clickable, a View reacts to a
      
             * context click (e.g. a primary stylus button press or right mouse click) by notifying the
      
             * OnContextClickListener.
      
             * </p>
      
             * {@hide}
      
             */
      
            static final int CONTEXT_CLICKABLE = 0x00800000;
      
            /** @hide */
      
            @IntDef({
      
                SCROLLBARS_INSIDE_OVERLAY,
      
                SCROLLBARS_INSIDE_INSET,
      
                SCROLLBARS_OUTSIDE_OVERLAY,
      
                SCROLLBARS_OUTSIDE_INSET
      
            })
      
            @Retention(RetentionPolicy.SOURCE)
      
            public @interface ScrollBarStyle {}
      
            /**
      
             * The scrollbar style to display the scrollbars inside the content area,
      
             * without increasing the padding. The scrollbars will be overlaid with
      
             * translucency on the view's content.
      
             */
      
            public static final int SCROLLBARS_INSIDE_OVERLAY = 0;
      
            /**
      
             * The scrollbar style to display the scrollbars inside the padded area,
      
             * increasing the padding of the view. The scrollbars will not overlap the
      
             * content area of the view.
      
             */
      
            public static final int SCROLLBARS_INSIDE_INSET = 0x01000000;
      
            /**
      
             * The scrollbar style to display the scrollbars at the edge of the view,
      
             * without increasing the padding. The scrollbars will be overlaid with
      
             * translucency.
      
             */
      
            public static final int SCROLLBARS_OUTSIDE_OVERLAY = 0x02000000;
      
            /**
      
             * The scrollbar style to display the scrollbars at the edge of the view,
      
             * increasing the padding of the view. The scrollbars will only overlap the
      
             * background, if any.
      
             */
      
            public static final int SCROLLBARS_OUTSIDE_INSET = 0x03000000;
      
            /**
      
             * Mask to check if the scrollbar style is overlay or inset.
      
             * {@hide}
      
             */
      
            static final int SCROLLBARS_INSET_MASK = 0x01000000;
      
            /**
      
             * Mask to check if the scrollbar style is inside or outside.
      
             * {@hide}
      
             */
      
            static final int SCROLLBARS_OUTSIDE_MASK = 0x02000000;
      
            /**
      
             * Mask for scrollbar style.
      
             * {@hide}
      
             */
      
            static final int SCROLLBARS_STYLE_MASK = 0x03000000;
      
            /**
      
             * View flag indicating that the screen should remain on while the
      
             * window containing this view is visible to the user.  This effectively
      
             * takes care of automatically setting the WindowManager's
      
             * {@link WindowManager.LayoutParams#FLAG_KEEP_SCREEN_ON}.
      
             */
      
            public static final int KEEP_SCREEN_ON = 0x04000000;
      
            /**
      
             * View flag indicating whether this view should have sound effects enabled
      
             * for events such as clicking and touching.
      
             */
      
            public static final int SOUND_EFFECTS_ENABLED = 0x08000000;
      
            /**
      
             * View flag indicating whether this view should have haptic feedback
      
             * enabled for events such as long presses.
      
             */
      
            public static final int HAPTIC_FEEDBACK_ENABLED = 0x10000000;
      
            /**
      
             * <p>Indicates that the view hierarchy should stop saving state when
      
             * it reaches this view.  If state saving is initiated immediately at
      
             * the view, it will be allowed.
      
             * {@hide}
      
             */
      
            static final int PARENT_SAVE_DISABLED = 0x20000000;
      
            /**
      
             * <p>Mask for use with setFlags indicating bits used for PARENT_SAVE_DISABLED.</p>
      
             * {@hide}
      
             */
      
            static final int PARENT_SAVE_DISABLED_MASK = 0x20000000;
      
            /** @hide */
      
            @IntDef(flag = true,
      
                    value = {
      
                        FOCUSABLES_ALL,
      
                        FOCUSABLES_TOUCH_MODE
      
                    })
      
            @Retention(RetentionPolicy.SOURCE)
      
            public @interface FocusableMode {}
      
            /**
      
             * View flag indicating whether {@link #addFocusables(ArrayList, int, int)}
      
             * should add all focusable Views regardless if they are focusable in touch mode.
      
             */
      
            public static final int FOCUSABLES_ALL = 0x00000000;
      
            /**
      
             * View flag indicating whether {@link #addFocusables(ArrayList, int, int)}
      
             * should add only Views focusable in touch mode.
      
             */
      
            public static final int FOCUSABLES_TOUCH_MODE = 0x00000001;
      
            /** @hide */
      
            @IntDef({
      
                    FOCUS_BACKWARD,
      
                    FOCUS_FORWARD,
      
                    FOCUS_LEFT,
      
                    FOCUS_UP,
      
                    FOCUS_RIGHT,
      
                    FOCUS_DOWN
      
            })
      
            @Retention(RetentionPolicy.SOURCE)
      
            public @interface FocusDirection {}
      
            /** @hide */
      
            @IntDef({
      
                    FOCUS_LEFT,
      
                    FOCUS_UP,
      
                    FOCUS_RIGHT,
      
                    FOCUS_DOWN
      
            })
      
            @Retention(RetentionPolicy.SOURCE)
      
            public @interface FocusRealDirection {} // Like @FocusDirection, but without forward/backward
      
            /**
      
             * Use with {@link #focusSearch(int)}. Move focus to the previous selectable
      
             * item.
      
             */
      
            public static final int FOCUS_BACKWARD = 0x00000001;
      
            /**
      
             * Use with {@link #focusSearch(int)}. Move focus to the next selectable
      
             * item.
      
             */
      
            public static final int FOCUS_FORWARD = 0x00000002;
      
            /**
      
             * Use with {@link #focusSearch(int)}. Move focus to the left.
      
             */
      
            public static final int FOCUS_LEFT = 0x00000011;
      
            /**
      
             * Use with {@link #focusSearch(int)}. Move focus up.
      
             */
      
            public static final int FOCUS_UP = 0x00000021;
      
            /**
      
             * Use with {@link #focusSearch(int)}. Move focus to the right.
      
             */
      
            public static final int FOCUS_RIGHT = 0x00000042;
      
            /**
      
             * Use with {@link #focusSearch(int)}. Move focus down.
      
             */
      
            public static final int FOCUS_DOWN = 0x00000082;
      
            /**
      
             * Bits of {@link #getMeasuredWidthAndState()} and
      
             * {@link #getMeasuredWidthAndState()} that provide the actual measured size.
      
             */
      
            public static final int MEASURED_SIZE_MASK = 0x00ffffff;
      
            /**
      
             * Bits of {@link #getMeasuredWidthAndState()} and
      
             * {@link #getMeasuredWidthAndState()} that provide the additional state bits.
      
             */
      
            public static final int MEASURED_STATE_MASK = 0xff000000;
      
            /**
      
             * Bit shift of {@link #MEASURED_STATE_MASK} to get to the height bits
      
             * for functions that combine both width and height into a single int,
      
             * such as {@link #getMeasuredState()} and the childState argument of
      
             * {@link #resolveSizeAndState(int, int, int)}.
      
             */
      
            public static final int MEASURED_HEIGHT_STATE_SHIFT = 16;
      
            /**
      
             * Bit of {@link #getMeasuredWidthAndState()} and
      
             * {@link #getMeasuredWidthAndState()} that indicates the measured size
      
             * is smaller that the space the view would like to have.
      
             */
      
            public static final int MEASURED_STATE_TOO_SMALL = 0x01000000;
      
            /**
      
             * Base View state sets
      
             */
      
            // Singles
      
            /**
      
             * Indicates the view has no states set. States are used with
      
             * {@link android.graphics.drawable.Drawable} to change the drawing of the
      
             * view depending on its state.
      
             *
      
             * @see android.graphics.drawable.Drawable
      
             * @see #getDrawableState()
      
             */
      
            protected static final int[] EMPTY_STATE_SET;
      
            /**
      
             * Indicates the view is enabled. States are used with
      
             * {@link android.graphics.drawable.Drawable} to change the drawing of the
      
             * view depending on its state.
      
             *
      
             * @see android.graphics.drawable.Drawable
      
             * @see #getDrawableState()
      
             */
      
            protected static final int[] ENABLED_STATE_SET;
      
            /**
      
             * Indicates the view is focused. States are used with
      
             * {@link android.graphics.drawable.Drawable} to change the drawing of the
      
             * view depending on its state.
      
             *
      
             * @see android.graphics.drawable.Drawable
      
             * @see #getDrawableState()
      
             */
      
            protected static final int[] FOCUSED_STATE_SET;
      
            /**
      
             * Indicates the view is selected. States are used with
      
             * {@link android.graphics.drawable.Drawable} to change the drawing of the
      
             * view depending on its state.
      
             *
      
             * @see android.graphics.drawable.Drawable
      
             * @see #getDrawableState()
      
             */
      
            protected static final int[] SELECTED_STATE_SET;
      
            /**
      
             * Indicates the view is pressed. States are used with
      
             * {@link android.graphics.drawable.Drawable} to change the drawing of the
      
             * view depending on its state.
      
             *
      
             * @see android.graphics.drawable.Drawable
      
             * @see #getDrawableState()
      
             */
      
            protected static final int[] PRESSED_STATE_SET;
      
            /**
      
             * Indicates the view's window has focus. States are used with
      
             * {@link android.graphics.drawable.Drawable} to change the drawing of the
      
             * view depending on its state.
      
             *
      
             * @see android.graphics.drawable.Drawable
      
             * @see #getDrawableState()
      
             */
      
            protected static final int[] WINDOW_FOCUSED_STATE_SET;
      
            // Doubles
      
            /**
      
             * Indicates the view is enabled and has the focus.
      
             *
      
             * @see #ENABLED_STATE_SET
      
             * @see #FOCUSED_STATE_SET
      
             */
      
            protected static final int[] ENABLED_FOCUSED_STATE_SET;
      
            /**
      
             * Indicates the view is enabled and selected.
      
             *
      
             * @see #ENABLED_STATE_SET
      
             * @see #SELECTED_STATE_SET
      
             */
      
            protected static final int[] ENABLED_SELECTED_STATE_SET;
      
            /**
      
             * Indicates the view is enabled and that its window has focus.
      
             *
      
             * @see #ENABLED_STATE_SET
      
             * @see #WINDOW_FOCUSED_STATE_SET
      
             */
      
            protected static final int[] ENABLED_WINDOW_FOCUSED_STATE_SET;
      
            /**
      
             * Indicates the view is focused and selected.
      
             *
      
             * @see #FOCUSED_STATE_SET
      
             * @see #SELECTED_STATE_SET
      
             */
      
            protected static final int[] FOCUSED_SELECTED_STATE_SET;
      
            /**
      
             * Indicates the view has the focus and that its window has the focus.
      
             *
      
             * @see #FOCUSED_STATE_SET
      
             * @see #WINDOW_FOCUSED_STATE_SET
      
             */
      
            protected static final int[] FOCUSED_WINDOW_FOCUSED_STATE_SET;
      
            /**
      
             * Indicates the view is selected and that its window has the focus.
      
             *
      
             * @see #SELECTED_STATE_SET
      
             * @see #WINDOW_FOCUSED_STATE_SET
      
             */
      
            protected static final int[] SELECTED_WINDOW_FOCUSED_STATE_SET;
      
            // Triples
      
            /**
      
             * Indicates the view is enabled, focused and selected.
      
             *
      
             * @see #ENABLED_STATE_SET
      
             * @see #FOCUSED_STATE_SET
      
             * @see #SELECTED_STATE_SET
      
             */
      
            protected static final int[] ENABLED_FOCUSED_SELECTED_STATE_SET;
      
            /**
      
             * Indicates the view is enabled, focused and its window has the focus.
      
             *
      
             * @see #ENABLED_STATE_SET
      
             * @see #FOCUSED_STATE_SET
      
             * @see #WINDOW_FOCUSED_STATE_SET
      
             */
      
            protected static final int[] ENABLED_FOCUSED_WINDOW_FOCUSED_STATE_SET;
      
            /**
      
             * Indicates the view is enabled, selected and its window has the focus.
      
             *
      
             * @see #ENABLED_STATE_SET
      
             * @see #SELECTED_STATE_SET
      
             * @see #WINDOW_FOCUSED_STATE_SET
      
             */
      
            protected static final int[] ENABLED_SELECTED_WINDOW_FOCUSED_STATE_SET;
      
            /**
      
             * Indicates the view is focused, selected and its window has the focus.
      
             *
      
             * @see #FOCUSED_STATE_SET
      
             * @see #SELECTED_STATE_SET
      
             * @see #WINDOW_FOCUSED_STATE_SET
      
             */
      
            protected static final int[] FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET;
      
            /**
      
             * Indicates the view is enabled, focused, selected and its window
      
             * has the focus.
      
             *
      
             * @see #ENABLED_STATE_SET
      
             * @see #FOCUSED_STATE_SET
      
             * @see #SELECTED_STATE_SET
      
             * @see #WINDOW_FOCUSED_STATE_SET
      
             */
      
            protected static final int[] ENABLED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET;
      
            /**
      
             * Indicates the view is pressed and its window has the focus.
      
             *
      
             * @see #PRESSED_STATE_SET
      
             * @see #WINDOW_FOCUSED_STATE_SET
      
             */
      
            protected static final int[] PRESSED_WINDOW_FOCUSED_STATE_SET;
      
            /**
      
             * Indicates the view is pressed and selected.
      
             *
      
             * @see #PRESSED_STATE_SET
      
             * @see #SELECTED_STATE_SET
      
             */
      
            protected static final int[] PRESSED_SELECTED_STATE_SET;
      
            /**
      
             * Indicates the view is pressed, selected and its window has the focus.
      
             *
      
             * @see #PRESSED_STATE_SET
      
             * @see #SELECTED_STATE_SET
      
             * @see #WINDOW_FOCUSED_STATE_SET
      
             */
      
            protected static final int[] PRESSED_SELECTED_WINDOW_FOCUSED_STATE_SET;
      
            /**
      
             * Indicates the view is pressed and focused.
      
             *
      
             * @see #PRESSED_STATE_SET
      
             * @see #FOCUSED_STATE_SET
      
             */
      
            protected static final int[] PRESSED_FOCUSED_STATE_SET;
      
            /**
      
             * Indicates the view is pressed, focused and its window has the focus.
      
             *
      
             * @see #PRESSED_STATE_SET
      
             * @see #FOCUSED_STATE_SET
      
             * @see #WINDOW_FOCUSED_STATE_SET
      
             */
      
            protected static final int[] PRESSED_FOCUSED_WINDOW_FOCUSED_STATE_SET;
      
            /**
      
             * Indicates the view is pressed, focused and selected.
      
             *
      
             * @see #PRESSED_STATE_SET
      
             * @see #SELECTED_STATE_SET
      
             * @see #FOCUSED_STATE_SET
      
             */
      
            protected static final int[] PRESSED_FOCUSED_SELECTED_STATE_SET;
      
            /**
      
             * Indicates the view is pressed, focused, selected and its window has the focus.
      
             *
      
             * @see #PRESSED_STATE_SET
      
             * @see #FOCUSED_STATE_SET
      
             * @see #SELECTED_STATE_SET
      
             * @see #WINDOW_FOCUSED_STATE_SET
      
             */
      
            protected static final int[] PRESSED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET;
      
            /**
      
             * Indicates the view is pressed and enabled.
      
             *
      
             * @see #PRESSED_STATE_SET
      
             * @see #ENABLED_STATE_SET
      
             */
      
            protected static final int[] PRESSED_ENABLED_STATE_SET;
      
            /**
      
             * Indicates the view is pressed, enabled and its window has the focus.
      
             *
      
             * @see #PRESSED_STATE_SET
      
             * @see #ENABLED_STATE_SET
      
             * @see #WINDOW_FOCUSED_STATE_SET
      
             */
      
            protected static final int[] PRESSED_ENABLED_WINDOW_FOCUSED_STATE_SET;
      
            /**
      
             * Indicates the view is pressed, enabled and selected.
      
             *
      
             * @see #PRESSED_STATE_SET
      
             * @see #ENABLED_STATE_SET
      
             * @see #SELECTED_STATE_SET
      
             */
      
            protected static final int[] PRESSED_ENABLED_SELECTED_STATE_SET;
      
            /**
      
             * Indicates the view is pressed, enabled, selected and its window has the
      
             * focus.
      
             *
      
             * @see #PRESSED_STATE_SET
      
             * @see #ENABLED_STATE_SET
      
             * @see #SELECTED_STATE_SET
      
             * @see #WINDOW_FOCUSED_STATE_SET
      
             */
      
            protected static final int[] PRESSED_ENABLED_SELECTED_WINDOW_FOCUSED_STATE_SET;
      
            /**
      
             * Indicates the view is pressed, enabled and focused.
      
             *
      
             * @see #PRESSED_STATE_SET
      
             * @see #ENABLED_STATE_SET
      
             * @see #FOCUSED_STATE_SET
      
             */
      
            protected static final int[] PRESSED_ENABLED_FOCUSED_STATE_SET;
      
            /**
      
             * Indicates the view is pressed, enabled, focused and its window has the
      
             * focus.
      
             *
      
             * @see #PRESSED_STATE_SET
      
             * @see #ENABLED_STATE_SET
      
             * @see #FOCUSED_STATE_SET
      
             * @see #WINDOW_FOCUSED_STATE_SET
      
             */
      
            protected static final int[] PRESSED_ENABLED_FOCUSED_WINDOW_FOCUSED_STATE_SET;
      
            /**
      
             * Indicates the view is pressed, enabled, focused and selected.
      
             *
      
             * @see #PRESSED_STATE_SET
      
             * @see #ENABLED_STATE_SET
      
             * @see #SELECTED_STATE_SET
      
             * @see #FOCUSED_STATE_SET
      
             */
      
            protected static final int[] PRESSED_ENABLED_FOCUSED_SELECTED_STATE_SET;
      
            /**
      
             * Indicates the view is pressed, enabled, focused, selected and its window
      
             * has the focus.
      
             *
      
             * @see #PRESSED_STATE_SET
      
             * @see #ENABLED_STATE_SET
      
             * @see #SELECTED_STATE_SET
      
             * @see #FOCUSED_STATE_SET
      
             * @see #WINDOW_FOCUSED_STATE_SET
      
             */
      
            protected static final int[] PRESSED_ENABLED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET;
      
            static {
      
                EMPTY_STATE_SET = StateSet.get(0);
      
                WINDOW_FOCUSED_STATE_SET = StateSet.get(StateSet.VIEW_STATE_WINDOW_FOCUSED);
      
                SELECTED_STATE_SET = StateSet.get(StateSet.VIEW_STATE_SELECTED);
      
                SELECTED_WINDOW_FOCUSED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_WINDOW_FOCUSED | StateSet.VIEW_STATE_SELECTED);
      
                FOCUSED_STATE_SET = StateSet.get(StateSet.VIEW_STATE_FOCUSED);
      
                FOCUSED_WINDOW_FOCUSED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_WINDOW_FOCUSED | StateSet.VIEW_STATE_FOCUSED);
      
                FOCUSED_SELECTED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_SELECTED | StateSet.VIEW_STATE_FOCUSED);
      
                FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_WINDOW_FOCUSED | StateSet.VIEW_STATE_SELECTED
      
                                | StateSet.VIEW_STATE_FOCUSED);
      
                ENABLED_STATE_SET = StateSet.get(StateSet.VIEW_STATE_ENABLED);
      
                ENABLED_WINDOW_FOCUSED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_WINDOW_FOCUSED | StateSet.VIEW_STATE_ENABLED);
      
                ENABLED_SELECTED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_SELECTED | StateSet.VIEW_STATE_ENABLED);
      
                ENABLED_SELECTED_WINDOW_FOCUSED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_WINDOW_FOCUSED | StateSet.VIEW_STATE_SELECTED
      
                                | StateSet.VIEW_STATE_ENABLED);
      
                ENABLED_FOCUSED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_FOCUSED | StateSet.VIEW_STATE_ENABLED);
      
                ENABLED_FOCUSED_WINDOW_FOCUSED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_WINDOW_FOCUSED | StateSet.VIEW_STATE_FOCUSED
      
                                | StateSet.VIEW_STATE_ENABLED);
      
                ENABLED_FOCUSED_SELECTED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_SELECTED | StateSet.VIEW_STATE_FOCUSED
      
                                | StateSet.VIEW_STATE_ENABLED);
      
                ENABLED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_WINDOW_FOCUSED | StateSet.VIEW_STATE_SELECTED
      
                                | StateSet.VIEW_STATE_FOCUSED| StateSet.VIEW_STATE_ENABLED);
      
                PRESSED_STATE_SET = StateSet.get(StateSet.VIEW_STATE_PRESSED);
      
                PRESSED_WINDOW_FOCUSED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_WINDOW_FOCUSED | StateSet.VIEW_STATE_PRESSED);
      
                PRESSED_SELECTED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_SELECTED | StateSet.VIEW_STATE_PRESSED);
      
                PRESSED_SELECTED_WINDOW_FOCUSED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_WINDOW_FOCUSED | StateSet.VIEW_STATE_SELECTED
      
                                | StateSet.VIEW_STATE_PRESSED);
      
                PRESSED_FOCUSED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_FOCUSED | StateSet.VIEW_STATE_PRESSED);
      
                PRESSED_FOCUSED_WINDOW_FOCUSED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_WINDOW_FOCUSED | StateSet.VIEW_STATE_FOCUSED
      
                                | StateSet.VIEW_STATE_PRESSED);
      
                PRESSED_FOCUSED_SELECTED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_SELECTED | StateSet.VIEW_STATE_FOCUSED
      
                                | StateSet.VIEW_STATE_PRESSED);
      
                PRESSED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_WINDOW_FOCUSED | StateSet.VIEW_STATE_SELECTED
      
                                | StateSet.VIEW_STATE_FOCUSED | StateSet.VIEW_STATE_PRESSED);
      
                PRESSED_ENABLED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_ENABLED | StateSet.VIEW_STATE_PRESSED);
      
                PRESSED_ENABLED_WINDOW_FOCUSED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_WINDOW_FOCUSED | StateSet.VIEW_STATE_ENABLED
      
                                | StateSet.VIEW_STATE_PRESSED);
      
                PRESSED_ENABLED_SELECTED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_SELECTED | StateSet.VIEW_STATE_ENABLED
      
                                | StateSet.VIEW_STATE_PRESSED);
      
                PRESSED_ENABLED_SELECTED_WINDOW_FOCUSED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_WINDOW_FOCUSED | StateSet.VIEW_STATE_SELECTED
      
                                | StateSet.VIEW_STATE_ENABLED | StateSet.VIEW_STATE_PRESSED);
      
                PRESSED_ENABLED_FOCUSED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_FOCUSED | StateSet.VIEW_STATE_ENABLED
      
                                | StateSet.VIEW_STATE_PRESSED);
      
                PRESSED_ENABLED_FOCUSED_WINDOW_FOCUSED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_WINDOW_FOCUSED | StateSet.VIEW_STATE_FOCUSED
      
                                | StateSet.VIEW_STATE_ENABLED | StateSet.VIEW_STATE_PRESSED);
      
                PRESSED_ENABLED_FOCUSED_SELECTED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_SELECTED | StateSet.VIEW_STATE_FOCUSED
      
                                | StateSet.VIEW_STATE_ENABLED | StateSet.VIEW_STATE_PRESSED);
      
                PRESSED_ENABLED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET = StateSet.get(
      
                        StateSet.VIEW_STATE_WINDOW_FOCUSED | StateSet.VIEW_STATE_SELECTED
      
                                | StateSet.VIEW_STATE_FOCUSED| StateSet.VIEW_STATE_ENABLED
      
                                | StateSet.VIEW_STATE_PRESSED);
      
            }
      
            /**
      
             * Accessibility event types that are dispatched for text population.
      
             */
      
            private static final int POPULATING_ACCESSIBILITY_EVENT_TYPES =
      
                    AccessibilityEvent.TYPE_VIEW_CLICKED
      
                    | AccessibilityEvent.TYPE_VIEW_LONG_CLICKED
      
                    | AccessibilityEvent.TYPE_VIEW_SELECTED
      
                    | AccessibilityEvent.TYPE_VIEW_FOCUSED
      
                    | AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED
      
                    | AccessibilityEvent.TYPE_VIEW_HOVER_ENTER
      
                    | AccessibilityEvent.TYPE_VIEW_HOVER_EXIT
      
                    | AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED
      
                    | AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED
      
                    | AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED
      
                    | AccessibilityEvent.TYPE_VIEW_TEXT_TRAVERSED_AT_MOVEMENT_GRANULARITY;
      
            /**
      
             * Temporary Rect currently for use in setBackground().  This will probably
      
             * be extended in the future to hold our own class with more than just
      
             * a Rect. :)
      
             */
      
            static final ThreadLocal<Rect> sThreadLocal = new ThreadLocal<Rect>();
      
            /**
      
             * Map used to store views' tags.
      
             */
      
            private SparseArray<Object> mKeyedTags;
      
            /**
      
             * The next available accessibility id.
      
             */
      
            private static int sNextAccessibilityViewId;
      
            /**
      
             * The animation currently associated with this view.
      
             * @hide
      
             */
      
            protected Animation mCurrentAnimation = null;
      
            /**
      
             * Width as measured during measure pass.
      
             * {@hide}
      
             */
      
            @ViewDebug.ExportedProperty(category = "measurement")
      
            int mMeasuredWidth;
      
            /**
      
             * Height as measured during measure pass.
      
             * {@hide}
      
             */
      
            @ViewDebug.ExportedProperty(category = "measurement")
      
            int mMeasuredHeight;
      
            /**
      
             * Flag to indicate that this view was marked INVALIDATED, or had its display list
      
             * invalidated, prior to the current drawing iteration. If true, the view must re-draw
      
             * its display list. This flag, used only when hw accelerated, allows us to clear the
      
             * flag while retaining this information until it's needed (at getDisplayList() time and
      
             * in drawChild(), when we decide to draw a view's children's display lists into our own).
      
             *
      
             * {@hide}
      
             */
      
            boolean mRecreateDisplayList = false;
      
            /**
      
             * The view's identifier.
      
             * {@hide}
      
             *
      
             * @see #setId(int)
      
             * @see #getId()
      
             */
      
            @IdRes
      
            @ViewDebug.ExportedProperty(resolveId = true)
      
            int mID = NO_ID;
      
            /**
      
             * The stable ID of this view for accessibility purposes.
      
             */
      
            int mAccessibilityViewId = NO_ID;
      
            private int mAccessibilityCursorPosition = ACCESSIBILITY_CURSOR_POSITION_UNDEFINED;
      
            SendViewStateChangedAccessibilityEvent mSendViewStateChangedAccessibilityEvent;
      
            /**
      
             * The view's tag.
      
             * {@hide}
      
             *
      
             * @see #setTag(Object)
      
             * @see #getTag()
      
             */
      
            protected Object mTag = null;
      
            // for mPrivateFlags:
      
            /** {@hide} */
      
            static final int PFLAG_WANTS_FOCUS                 = 0x00000001;
      
            /** {@hide} */
      
            static final int PFLAG_FOCUSED                     = 0x00000002;
      
            /** {@hide} */
      
            static final int PFLAG_SELECTED                    = 0x00000004;
      
            /** {@hide} */
      
            static final int PFLAG_IS_ROOT_NAMESPACE           = 0x00000008;
      
            /** {@hide} */
      
            static final int PFLAG_HAS_BOUNDS                  = 0x00000010;
      
            /** {@hide} */
      
            static final int PFLAG_DRAWN                       = 0x00000020;
      
            /**
      
             * When this flag is set, this view is running an animation on behalf of its
      
             * children and should therefore not cancel invalidate requests, even if they
      
             * lie outside of this view's bounds.
      
             *
      
             * {@hide}
      
             */
      
            static final int PFLAG_DRAW_ANIMATION              = 0x00000040;
      
            /** {@hide} */
      
            static final int PFLAG_SKIP_DRAW                   = 0x00000080;
      
            /** {@hide} */
      
            static final int PFLAG_REQUEST_TRANSPARENT_REGIONS = 0x00000200;
      
            /** {@hide} */
      
            static final int PFLAG_DRAWABLE_STATE_DIRTY        = 0x00000400;
      
            /** {@hide} */
      
            static final int PFLAG_MEASURED_DIMENSION_SET      = 0x00000800;
      
            /** {@hide} */
      
            static final int PFLAG_FORCE_LAYOUT                = 0x00001000;
      
            /** {@hide} */
      
            static final int PFLAG_LAYOUT_REQUIRED             = 0x00002000;
      
            private static final int PFLAG_PRESSED             = 0x00004000;
      
            /** {@hide} */
      
            static final int PFLAG_DRAWING_CACHE_VALID         = 0x00008000;
      
            /**
      
             * Flag used to indicate that this view should be drawn once more (and only once
      
             * more) after its animation has completed.
      
             * {@hide}
      
             */
      
            static final int PFLAG_ANIMATION_STARTED           = 0x00010000;
      
            private static final int PFLAG_SAVE_STATE_CALLED   = 0x00020000;
      
            /**
      
             * Indicates that the View returned true when onSetAlpha() was called and that
      
             * the alpha must be restored.
      
             * {@hide}
      
             */
      
            static final int PFLAG_ALPHA_SET                   = 0x00040000;
      
            /**
      
             * Set by {@link #setScrollContainer(boolean)}.
      
             */
      
            static final int PFLAG_SCROLL_CONTAINER            = 0x00080000;
      
            /**
      
             * Set by {@link #setScrollContainer(boolean)}.
      
             */
      
            static final int PFLAG_SCROLL_CONTAINER_ADDED      = 0x00100000;
      
            /**
      
             * View flag indicating whether this view was invalidated (fully or partially.)
      
             *
      
             * @hide
      
             */
      
            static final int PFLAG_DIRTY                       = 0x00200000;
      
            /**
      
             * View flag indicating whether this view was invalidated by an opaque
      
             * invalidate request.
      
             *
      
             * @hide
      
             */
      
            static final int PFLAG_DIRTY_OPAQUE                = 0x00400000;
      
            /**
      
             * Mask for {@link #PFLAG_DIRTY} and {@link #PFLAG_DIRTY_OPAQUE}.
      
             *
      
             * @hide
      
             */
      
            static final int PFLAG_DIRTY_MASK                  = 0x00600000;
      
            /**
      
             * Indicates whether the background is opaque.
      
             *
      
             * @hide
      
             */
      
            static final int PFLAG_OPAQUE_BACKGROUND           = 0x00800000;
      
            /**
      
             * Indicates whether the scrollbars are opaque.
      
             *
      
             * @hide
      
             */
      
            static final int PFLAG_OPAQUE_SCROLLBARS           = 0x01000000;
      
            /**
      
             * Indicates whether the view is opaque.
      
             *
      
             * @hide
      
             */
      
            static final int PFLAG_OPAQUE_MASK                 = 0x01800000;
      
            /**
      
             * Indicates a prepressed state;
      
             * the short time between ACTION_DOWN and recognizing
      
             * a 'real' press. Prepressed is used to recognize quick taps
      
             * even when they are shorter than ViewConfiguration.getTapTimeout().
      
             *
      
             * @hide
      
             */
      
            private static final int PFLAG_PREPRESSED          = 0x02000000;
      
            /**
      
             * Indicates whether the view is temporarily detached.
      
             *
      
             * @hide
      
             */
      
            static final int PFLAG_CANCEL_NEXT_UP_EVENT        = 0x04000000;
      
            /**
      
             * Indicates that we should awaken scroll bars once attached
      
             *
      
             * PLEASE NOTE: This flag is now unused as we now send onVisibilityChanged
      
             * during window attachment and it is no longer needed. Feel free to repurpose it.
      
             *
      
             * @hide
      
             */
      
            private static final int PFLAG_AWAKEN_SCROLL_BARS_ON_ATTACH = 0x08000000;
      
            /**
      
             * Indicates that the view has received HOVER_ENTER.  Cleared on HOVER_EXIT.
      
             * @hide
      
             */
      
            private static final int PFLAG_HOVERED             = 0x10000000;
      
            /**
      
             * no longer needed, should be reused
      
             */
      
            private static final int PFLAG_DOES_NOTHING_REUSE_PLEASE = 0x20000000;
      
            /** {@hide} */
      
            static final int PFLAG_ACTIVATED                   = 0x40000000;
      
            /**
      
             * Indicates that this view was specifically invalidated, not just dirtied because some
      
             * child view was invalidated. The flag is used to determine when we need to recreate
      
             * a view's display list (as opposed to just returning a reference to its existing
      
             * display list).
      
             *
      
             * @hide
      
             */
      
            static final int PFLAG_INVALIDATED                 = 0x80000000;
      
            /**
      
             * Masks for mPrivateFlags2, as generated by dumpFlags():
      
             *
      
             * |-------|-------|-------|-------|
      
             *                                 1 PFLAG2_DRAG_CAN_ACCEPT
      
             *                                1  PFLAG2_DRAG_HOVERED
      
             *                              11   PFLAG2_LAYOUT_DIRECTION_MASK
      
             *                             1     PFLAG2_LAYOUT_DIRECTION_RESOLVED_RTL
      
             *                            1      PFLAG2_LAYOUT_DIRECTION_RESOLVED
      
             *                            11     PFLAG2_LAYOUT_DIRECTION_RESOLVED_MASK
      
             *                           1       PFLAG2_TEXT_DIRECTION_FLAGS[1]
      
             *                          1        PFLAG2_TEXT_DIRECTION_FLAGS[2]
      
             *                          11       PFLAG2_TEXT_DIRECTION_FLAGS[3]
      
             *                         1         PFLAG2_TEXT_DIRECTION_FLAGS[4]
      
             *                         1 1       PFLAG2_TEXT_DIRECTION_FLAGS[5]
      
             *                         11        PFLAG2_TEXT_DIRECTION_FLAGS[6]
      
             *                         111       PFLAG2_TEXT_DIRECTION_FLAGS[7]
      
             *                         111       PFLAG2_TEXT_DIRECTION_MASK
      
             *                        1          PFLAG2_TEXT_DIRECTION_RESOLVED
      
             *                       1           PFLAG2_TEXT_DIRECTION_RESOLVED_DEFAULT
      
             *                     111           PFLAG2_TEXT_DIRECTION_RESOLVED_MASK
      
             *                    1              PFLAG2_TEXT_ALIGNMENT_FLAGS[1]
      
             *                   1               PFLAG2_TEXT_ALIGNMENT_FLAGS[2]
      
             *                   11              PFLAG2_TEXT_ALIGNMENT_FLAGS[3]
      
             *                  1                PFLAG2_TEXT_ALIGNMENT_FLAGS[4]
      
             *                  1 1              PFLAG2_TEXT_ALIGNMENT_FLAGS[5]
      
             *                  11               PFLAG2_TEXT_ALIGNMENT_FLAGS[6]
      
             *                  111              PFLAG2_TEXT_ALIGNMENT_MASK
      
             *                 1                 PFLAG2_TEXT_ALIGNMENT_RESOLVED
      
             *                1                  PFLAG2_TEXT_ALIGNMENT_RESOLVED_DEFAULT
      
             *              111                  PFLAG2_TEXT_ALIGNMENT_RESOLVED_MASK
      
             *           111                     PFLAG2_IMPORTANT_FOR_ACCESSIBILITY_MASK
      
             *         11                        PFLAG2_ACCESSIBILITY_LIVE_REGION_MASK
      
             *       1                           PFLAG2_ACCESSIBILITY_FOCUSED
      
             *      1                            PFLAG2_SUBTREE_ACCESSIBILITY_STATE_CHANGED
      
             *     1                             PFLAG2_VIEW_QUICK_REJECTED
      
             *    1                              PFLAG2_PADDING_RESOLVED
      
             *   1                               PFLAG2_DRAWABLE_RESOLVED
      
             *  1                                PFLAG2_HAS_TRANSIENT_STATE
      
             * |-------|-------|-------|-------|
      
             */
      
            /**
      
             * Indicates that this view has reported that it can accept the current drag's content.
      
             * Cleared when the drag operation concludes.
      
             * @hide
      
             */
      
            static final int PFLAG2_DRAG_CAN_ACCEPT            = 0x00000001;
      
            /**
      
             * Indicates that this view is currently directly under the drag location in a
      
             * drag-and-drop operation involving content that it can accept.  Cleared when
      
             * the drag exits the view, or when the drag operation concludes.
      
             * @hide
      
             */
      
            static final int PFLAG2_DRAG_HOVERED               = 0x00000002;
      
            /** @hide */
      
            @IntDef({
      
                LAYOUT_DIRECTION_LTR,
      
                LAYOUT_DIRECTION_RTL,
      
                LAYOUT_DIRECTION_INHERIT,
      
                LAYOUT_DIRECTION_LOCALE
      
            })
      
            @Retention(RetentionPolicy.SOURCE)
      
            // Not called LayoutDirection to avoid conflict with android.util.LayoutDirection
      
            public @interface LayoutDir {}
      
            /** @hide */
      
            @IntDef({
      
                LAYOUT_DIRECTION_LTR,
      
                LAYOUT_DIRECTION_RTL
      
            })
      
            @Retention(RetentionPolicy.SOURCE)
      
            public @interface ResolvedLayoutDir {}
      
            /**
      
             * A flag to indicate that the layout direction of this view has not been defined yet.
      
             * @hide
      
             */
      
            public static final int LAYOUT_DIRECTION_UNDEFINED = LayoutDirection.UNDEFINED;
      
            /**
      
             * Horizontal layout direction of this view is from Left to Right.
      
             * Use with {@link #setLayoutDirection}.
      
             */
      
            public static final int LAYOUT_DIRECTION_LTR = LayoutDirection.LTR;
      
            /**
      
             * Horizontal layout direction of this view is from Right to Left.
      
             * Use with {@link #setLayoutDirection}.
      
             */
      
            public static final int LAYOUT_DIRECTION_RTL = LayoutDirection.RTL;
      
            /**
      
             * Horizontal layout direction of this view is inherited from its parent.
      
             * Use with {@link #setLayoutDirection}.
      
             */
      
            public static final int LAYOUT_DIRECTION_INHERIT = LayoutDirection.INHERIT;
      
            /**
      
             * Horizontal layout direction of this view is from deduced from the default language
      
             * script for the locale. Use with {@link #setLayoutDirection}.
      
             */
      
            public static final int LAYOUT_DIRECTION_LOCALE = LayoutDirection.LOCALE;
      
            /**
      
             * Bit shift to get the horizontal layout direction. (bits after DRAG_HOVERED)
      
             * @hide
      
             */
      
            static final int PFLAG2_LAYOUT_DIRECTION_MASK_SHIFT = 2;
      
            /**
      
             * Mask for use with private flags indicating bits used for horizontal layout direction.
      
             * @hide
      
             */
      
            static final int PFLAG2_LAYOUT_DIRECTION_MASK = 0x00000003 << PFLAG2_LAYOUT_DIRECTION_MASK_SHIFT;
      
            /**
      
             * Indicates whether the view horizontal layout direction has been resolved and drawn to the
      
             * right-to-left direction.
      
             * @hide
      
             */
      
            static final int PFLAG2_LAYOUT_DIRECTION_RESOLVED_RTL = 4 << PFLAG2_LAYOUT_DIRECTION_MASK_SHIFT;
      
            /**
      
             * Indicates whether the view horizontal layout direction has been resolved.
      
             * @hide
      
             */
      
            static final int PFLAG2_LAYOUT_DIRECTION_RESOLVED = 8 << PFLAG2_LAYOUT_DIRECTION_MASK_SHIFT;
      
            /**
      
             * Mask for use with private flags indicating bits used for resolved horizontal layout direction.
      
             * @hide
      
             */
      
            static final int PFLAG2_LAYOUT_DIRECTION_RESOLVED_MASK = 0x0000000C
      
                    << PFLAG2_LAYOUT_DIRECTION_MASK_SHIFT;
      
            /*
      
             * Array of horizontal layout direction flags for mapping attribute "layoutDirection" to correct
      
             * flag value.
      
             * @hide
      
             */
      
            private static final int[] LAYOUT_DIRECTION_FLAGS = {
      
                    LAYOUT_DIRECTION_LTR,
      
                    LAYOUT_DIRECTION_RTL,
      
                    LAYOUT_DIRECTION_INHERIT,
      
                    LAYOUT_DIRECTION_LOCALE
      
            };
      
            /**
      
             * Default horizontal layout direction.
      
             */
      
            private static final int LAYOUT_DIRECTION_DEFAULT = LAYOUT_DIRECTION_INHERIT;
      
            /**
      
             * Default horizontal layout direction.
      
             * @hide
      
             */
      
            static final int LAYOUT_DIRECTION_RESOLVED_DEFAULT = LAYOUT_DIRECTION_LTR;
      
            /**
      
             * Text direction is inherited through {@link ViewGroup}
      
             */
      
            public static final int TEXT_DIRECTION_INHERIT = 0;
      
            /**
      
             * Text direction is using "first strong algorithm". The first strong directional character
      
             * determines the paragraph direction. If there is no strong directional character, the
      
             * paragraph direction is the view's resolved layout direction.
      
             */
      
            public static final int TEXT_DIRECTION_FIRST_STRONG = 1;
      
            /**
      
             * Text direction is using "any-RTL" algorithm. The paragraph direction is RTL if it contains
      
             * any strong RTL character, otherwise it is LTR if it contains any strong LTR characters.
      
             * If there are neither, the paragraph direction is the view's resolved layout direction.
      
             */
      
            public static final int TEXT_DIRECTION_ANY_RTL = 2;
      
            /**
      
             * Text direction is forced to LTR.
      
             */
      
            public static final int TEXT_DIRECTION_LTR = 3;
      
            /**
      
             * Text direction is forced to RTL.
      
             */
      
            public static final int TEXT_DIRECTION_RTL = 4;
      
            /**
      
             * Text direction is coming from the system Locale.
      
             */
      
            public static final int TEXT_DIRECTION_LOCALE = 5;
      
            /**
      
             * Text direction is using "first strong algorithm". The first strong directional character
      
             * determines the paragraph direction. If there is no strong directional character, the
      
             * paragraph direction is LTR.
      
             */
      
            public static final int TEXT_DIRECTION_FIRST_STRONG_LTR = 6;
      
            /**
      
             * Text direction is using "first strong algorithm". The first strong directional character
      
             * determines the paragraph direction. If there is no strong directional character, the
      
             * paragraph direction is RTL.
      
             */
      
            public static final int TEXT_DIRECTION_FIRST_STRONG_RTL = 7;
      
            /**
      
             * Default text direction is inherited
      
             */
      
            private static final int TEXT_DIRECTION_DEFAULT = TEXT_DIRECTION_INHERIT;
      
            /**
      
             * Default resolved text direction
      
             * @hide
      
             */
      
            static final int TEXT_DIRECTION_RESOLVED_DEFAULT = TEXT_DIRECTION_FIRST_STRONG;
      
            /**
      
             * Bit shift to get the horizontal layout direction. (bits after LAYOUT_DIRECTION_RESOLVED)
      
             * @hide
      
             */
      
            static final int PFLAG2_TEXT_DIRECTION_MASK_SHIFT = 6;
      
            /**
      
             * Mask for use with private flags indicating bits used for text direction.
      
             * @hide
      
             */
      
            static final int PFLAG2_TEXT_DIRECTION_MASK = 0x00000007
      
                    << PFLAG2_TEXT_DIRECTION_MASK_SHIFT;
      
            /**
      
             * Array of text direction flags for mapping attribute "textDirection" to correct
      
             * flag value.
      
             * @hide
      
             */
      
            private static final int[] PFLAG2_TEXT_DIRECTION_FLAGS = {
      
                    TEXT_DIRECTION_INHERIT << PFLAG2_TEXT_DIRECTION_MASK_SHIFT,
      
                    TEXT_DIRECTION_FIRST_STRONG << PFLAG2_TEXT_DIRECTION_MASK_SHIFT,
      
                    TEXT_DIRECTION_ANY_RTL << PFLAG2_TEXT_DIRECTION_MASK_SHIFT,
      
                    TEXT_DIRECTION_LTR << PFLAG2_TEXT_DIRECTION_MASK_SHIFT,
      
                    TEXT_DIRECTION_RTL << PFLAG2_TEXT_DIRECTION_MASK_SHIFT,
      
                    TEXT_DIRECTION_LOCALE << PFLAG2_TEXT_DIRECTION_MASK_SHIFT,
      
                    TEXT_DIRECTION_FIRST_STRONG_LTR << PFLAG2_TEXT_DIRECTION_MASK_SHIFT,
      
                    TEXT_DIRECTION_FIRST_STRONG_RTL << PFLAG2_TEXT_DIRECTION_MASK_SHIFT
      
            };
      
            /**
      
             * Indicates whether the view text direction has been resolved.
      
             * @hide
      
             */
      
            static final int PFLAG2_TEXT_DIRECTION_RESOLVED = 0x00000008
      
                    << PFLAG2_TEXT_DIRECTION_MASK_SHIFT;
      
            /**
      
             * Bit shift to get the horizontal layout direction. (bits after DRAG_HOVERED)
      
             * @hide
      
             */
      
            static final int PFLAG2_TEXT_DIRECTION_RESOLVED_MASK_SHIFT = 10;
      
            /**
      
             * Mask for use with private flags indicating bits used for resolved text direction.
      
             * @hide
      
             */
      
            static final int PFLAG2_TEXT_DIRECTION_RESOLVED_MASK = 0x00000007
      
                    << PFLAG2_TEXT_DIRECTION_RESOLVED_MASK_SHIFT;
      
            /**
      
             * Indicates whether the view text direction has been resolved to the "first strong" heuristic.
      
             * @hide
      
             */
      
            static final int PFLAG2_TEXT_DIRECTION_RESOLVED_DEFAULT =
      
                    TEXT_DIRECTION_RESOLVED_DEFAULT << PFLAG2_TEXT_DIRECTION_RESOLVED_MASK_SHIFT;
      
            /** @hide */
      
            @IntDef({
      
                TEXT_ALIGNMENT_INHERIT,
      
                TEXT_ALIGNMENT_GRAVITY,
      
                TEXT_ALIGNMENT_CENTER,
      
                TEXT_ALIGNMENT_TEXT_START,
      
                TEXT_ALIGNMENT_TEXT_END,
      
                TEXT_ALIGNMENT_VIEW_START,
      
                TEXT_ALIGNMENT_VIEW_END
      
            })
      
            @Retention(RetentionPolicy.SOURCE)
      
            public @interface TextAlignment {}
      
            /**
      
             * Default text alignment. The text alignment of this View is inherited from its parent.
      
             * Use with {@link #setTextAlignment(int)}
      
             */
      
            public static final int TEXT_ALIGNMENT_INHERIT = 0;
      
            /**
      
             * Default for the root view. The gravity determines the text alignment, ALIGN_NORMAL,
      
             * ALIGN_CENTER, or ALIGN_OPPOSITE, which are relative to each paragraph’s text direction.
      
             *
      
             * Use with {@link #setTextAlignment(int)}
      
             */
      
            public static final int TEXT_ALIGNMENT_GRAVITY = 1;
      
            /**
      
             * Align to the start of the paragraph, e.g. ALIGN_NORMAL.
      
             *
      
             * Use with {@link #setTextAlignment(int)}
      
             */
      
            public static final int TEXT_ALIGNMENT_TEXT_START = 2;
      
            /**
      
             * Align to the end of the paragraph, e.g. ALIGN_OPPOSITE.
      
             *
      
             * Use with {@link #setTextAlignment(int)}
      
             */
      
            public static final int TEXT_ALIGNMENT_TEXT_END = 3;
      
            /**
      
             * Center the paragraph, e.g. ALIGN_CENTER.
      
             *
      
             * Use with {@link #setTextAlignment(int)}
      
             */
      
            public static final int TEXT_ALIGNMENT_CENTER = 4;
      
            /**
      
             * Align to the start of the view, which is ALIGN_LEFT if the view’s resolved
      
             * layoutDirection is LTR, and ALIGN_RIGHT otherwise.
      
             *
      
             * Use with {@link #setTextAlignment(int)}
      
             */
      
            public static final int TEXT_ALIGNMENT_VIEW_START = 5;
      
            /**
      
             * Align to the end of the view, which is ALIGN_RIGHT if the view’s resolved
      
             * layoutDirection is LTR, and ALIGN_LEFT otherwise.
      
             *
      
             * Use with {@link #setTextAlignment(int)}
      
             */
      
            public static final int TEXT_ALIGNMENT_VIEW_END = 6;
      
            /**
      
             * Default text alignment is inherited
      
             */
      
            private static final int TEXT_ALIGNMENT_DEFAULT = TEXT_ALIGNMENT_GRAVITY;
      
            /**
      
             * Default resolved text alignment
      
             * @hide
      
             */
      
            static final int TEXT_ALIGNMENT_RESOLVED_DEFAULT = TEXT_ALIGNMENT_GRAVITY;
      
            /**
      
              * Bit shift to get the horizontal layout direction. (bits after DRAG_HOVERED)
      
              * @hide
      
              */
      
            static final int PFLAG2_TEXT_ALIGNMENT_MASK_SHIFT = 13;
      
            /**
      
              * Mask for use with private flags indicating bits used for text alignment.
      
              * @hide
      
              */
      
            static final int PFLAG2_TEXT_ALIGNMENT_MASK = 0x00000007 << PFLAG2_TEXT_ALIGNMENT_MASK_SHIFT;
      
            /**
      
             * Array of text direction flags for mapping attribute "textAlignment" to correct
      
             * flag value.
      
             * @hide
      
             */
      
            private static final int[] PFLAG2_TEXT_ALIGNMENT_FLAGS = {
      
                    TEXT_ALIGNMENT_INHERIT << PFLAG2_TEXT_ALIGNMENT_MASK_SHIFT,
      
                    TEXT_ALIGNMENT_GRAVITY << PFLAG2_TEXT_ALIGNMENT_MASK_SHIFT,
      
                    TEXT_ALIGNMENT_TEXT_START << PFLAG2_TEXT_ALIGNMENT_MASK_SHIFT,
      
                    TEXT_ALIGNMENT_TEXT_END << PFLAG2_TEXT_ALIGNMENT_MASK_SHIFT,
      
                    TEXT_ALIGNMENT_CENTER << PFLAG2_TEXT_ALIGNMENT_MASK_SHIFT,
      
                    TEXT_ALIGNMENT_VIEW_START << PFLAG2_TEXT_ALIGNMENT_MASK_SHIFT,
      
                    TEXT_ALIGNMENT_VIEW_END << PFLAG2_TEXT_ALIGNMENT_MASK_SHIFT
      
            };
      
            /**
      
             * Indicates whether the view text alignment has been resolved.
      
             * @hide
      
             */
      
            static final int PFLAG2_TEXT_ALIGNMENT_RESOLVED = 0x00000008 << PFLAG2_TEXT_ALIGNMENT_MASK_SHIFT;
      
            /**
      
             * Bit shift to get the resolved text alignment.
      
             * @hide
      
             */
      
            static final int PFLAG2_TEXT_ALIGNMENT_RESOLVED_MASK_SHIFT = 17;
      
            /**
      
             * Mask for use with private flags indicating bits used for text alignment.
      
             * @hide
      
             */
      
            static final int PFLAG2_TEXT_ALIGNMENT_RESOLVED_MASK = 0x00000007
      
                    << PFLAG2_TEXT_ALIGNMENT_RESOLVED_MASK_SHIFT;
      
            /**
      
             * Indicates whether if the view text alignment has been resolved to gravity
      
             */
      
            private static final int PFLAG2_TEXT_ALIGNMENT_RESOLVED_DEFAULT =
      
                    TEXT_ALIGNMENT_RESOLVED_DEFAULT << PFLAG2_TEXT_ALIGNMENT_RESOLVED_MASK_SHIFT;
      
            // Accessiblity constants for mPrivateFlags2
      
            /**
      
             * Shift for the bits in {@link #mPrivateFlags2} related to the
      
             * "importantForAccessibility" attribute.
      
             */
      
            static final int PFLAG2_IMPORTANT_FOR_ACCESSIBILITY_SHIFT = 20;
      
            /**
      
             * Automatically determine whether a view is important for accessibility.
      
             */
      
            public static final int IMPORTANT_FOR_ACCESSIBILITY_AUTO = 0x00000000;
      
            /**
      
             * The view is important for accessibility.
      
             */
      
            public static final int IMPORTANT_FOR_ACCESSIBILITY_YES = 0x00000001;
      
            /**
      
             * The view is not important for accessibility.
      
             */
      
            public static final int IMPORTANT_FOR_ACCESSIBILITY_NO = 0x00000002;
      
            /**
      
             * The view is not important for accessibility, nor are any of its
      
             * descendant views.
      
             */
      
            public static final int IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS = 0x00000004;
      
            /**
      
             * The default whether the view is important for accessibility.
      
             */
      
            static final int IMPORTANT_FOR_ACCESSIBILITY_DEFAULT = IMPORTANT_FOR_ACCESSIBILITY_AUTO;
      
            /**
      
             * Mask for obtainig the bits which specify how to determine
      
             * whether a view is important for accessibility.
      
             */
      
            static final int PFLAG2_IMPORTANT_FOR_ACCESSIBILITY_MASK = (IMPORTANT_FOR_ACCESSIBILITY_AUTO
      
                | IMPORTANT_FOR_ACCESSIBILITY_YES | IMPORTANT_FOR_ACCESSIBILITY_NO
      
                | IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS)
      
                << PFLAG2_IMPORTANT_FOR_ACCESSIBILITY_SHIFT;
      
            /**
      
             * Shift for the bits in {@link #mPrivateFlags2} related to the
      
             * "accessibilityLiveRegion" attribute.
      
             */
      
            static final int PFLAG2_ACCESSIBILITY_LIVE_REGION_SHIFT = 23;
      
            /**
      
             * Live region mode specifying that accessibility services should not
      
             * automatically announce changes to this view. This is the default live
      
             * region mode for most views.
      
             * <p>
      
             * Use with {@link #setAccessibilityLiveRegion(int)}.
      
             */
      
            public static final int ACCESSIBILITY_LIVE_REGION_NONE = 0x00000000;
      
            /**
      
             * Live region mode specifying that accessibility services should announce
      
             * changes to this view.
      
             * <p>
      
             * Use with {@link #setAccessibilityLiveRegion(int)}.
      
             */
      
            public static final int ACCESSIBILITY_LIVE_REGION_POLITE = 0x00000001;
      
            /**
      
             * Live region mode specifying that accessibility services should interrupt
      
             * ongoing speech to immediately announce changes to this view.
      
             * <p>
      
             * Use with {@link #setAccessibilityLiveRegion(int)}.
      
             */
      
            public static final int ACCESSIBILITY_LIVE_REGION_ASSERTIVE = 0x00000002;
      
            /**
      
             * The default whether the view is important for accessibility.
      
             */
      
            static final int ACCESSIBILITY_LIVE_REGION_DEFAULT = ACCESSIBILITY_LIVE_REGION_NONE;
      
            /**
      
             * Mask for obtaining the bits which specify a view's accessibility live
      
             * region mode.
      
             */
      
            static final int PFLAG2_ACCESSIBILITY_LIVE_REGION_MASK = (ACCESSIBILITY_LIVE_REGION_NONE
      
                    | ACCESSIBILITY_LIVE_REGION_POLITE | ACCESSIBILITY_LIVE_REGION_ASSERTIVE)
      
                    << PFLAG2_ACCESSIBILITY_LIVE_REGION_SHIFT;
      
            /**
      
             * Flag indicating whether a view has accessibility focus.
      
             */
      
            static final int PFLAG2_ACCESSIBILITY_FOCUSED = 0x04000000;
      
            /**
      
             * Flag whether the accessibility state of the subtree rooted at this view changed.
      
             */
      
            static final int PFLAG2_SUBTREE_ACCESSIBILITY_STATE_CHANGED = 0x08000000;
      
            /**
      
             * Flag indicating whether a view failed the quickReject() check in draw(). This condition
      
             * is used to check whether later changes to the view's transform should invalidate the
      
             * view to force the quickReject test to run again.
      
             */
      
            static final int PFLAG2_VIEW_QUICK_REJECTED = 0x10000000;
      
            /**
      
             * Flag indicating that start/end padding has been resolved into left/right padding
      
             * for use in measurement, layout, drawing, etc. This is set by {@link #resolvePadding()}
      
             * and checked by {@link #measure(int, int)} to determine if padding needs to be resolved
      
             * during measurement. In some special cases this is required such as when an adapter-based
      
             * view measures prospective children without attaching them to a window.
      
             */
      
            static final int PFLAG2_PADDING_RESOLVED = 0x20000000;
      
            /**
      
             * Flag indicating that the start/end drawables has been resolved into left/right ones.
      
             */
      
            static final int PFLAG2_DRAWABLE_RESOLVED = 0x40000000;
      
            /**
      
             * Indicates that the view is tracking some sort of transient state
      
             * that the app should not need to be aware of, but that the framework
      
             * should take special care to preserve.
      
             */
      
            static final int PFLAG2_HAS_TRANSIENT_STATE = 0x80000000;
      
            /**
      
             * Group of bits indicating that RTL properties resolution is done.
      
             */
      
            static final int ALL_RTL_PROPERTIES_RESOLVED = PFLAG2_LAYOUT_DIRECTION_RESOLVED |
      
                    PFLAG2_TEXT_DIRECTION_RESOLVED |
      
                    PFLAG2_TEXT_ALIGNMENT_RESOLVED |
      
                    PFLAG2_PADDING_RESOLVED |
      
                    PFLAG2_DRAWABLE_RESOLVED;
      
            // There are a couple of flags left in mPrivateFlags2
      
            /* End of masks for mPrivateFlags2 */
      
            /**
      
             * Masks for mPrivateFlags3, as generated by dumpFlags():
      
             *
      
             * |-------|-------|-------|-------|
      
             *                                 1 PFLAG3_VIEW_IS_ANIMATING_TRANSFORM
      
             *                                1  PFLAG3_VIEW_IS_ANIMATING_ALPHA
      
             *                               1   PFLAG3_IS_LAID_OUT
      
             *                              1    PFLAG3_MEASURE_NEEDED_BEFORE_LAYOUT
      
             *                             1     PFLAG3_CALLED_SUPER
      
             *                            1      PFLAG3_APPLYING_INSETS
      
             *                           1       PFLAG3_FITTING_SYSTEM_WINDOWS
      
             *                          1        PFLAG3_NESTED_SCROLLING_ENABLED
      
             *                         1         PFLAG3_SCROLL_INDICATOR_TOP
      
             *                        1          PFLAG3_SCROLL_INDICATOR_BOTTOM
      
             *                       1           PFLAG3_SCROLL_INDICATOR_LEFT
      
             *                      1            PFLAG3_SCROLL_INDICATOR_RIGHT
      
             *                     1             PFLAG3_SCROLL_INDICATOR_START
      
             *                    1              PFLAG3_SCROLL_INDICATOR_END
      
             *                   1               PFLAG3_ASSIST_BLOCKED
      
             * |-------|-------|-------|-------|
      
             */
      
            /**
      
             * Flag indicating that view has a transform animation set on it. This is used to track whether
      
             * an animation is cleared between successive frames, in order to tell the associated
      
             * DisplayList to clear its animation matrix.
      
             */
      
            static final int PFLAG3_VIEW_IS_ANIMATING_TRANSFORM = 0x1;
      
            /**
      
             * Flag indicating that view has an alpha animation set on it. This is used to track whether an
      
             * animation is cleared between successive frames, in order to tell the associated
      
             * DisplayList to restore its alpha value.
      
             */
      
            static final int PFLAG3_VIEW_IS_ANIMATING_ALPHA = 0x2;
      
            /**
      
             * Flag indicating that the view has been through at least one layout since it
      
             * was last attached to a window.
      
             */
      
            static final int PFLAG3_IS_LAID_OUT = 0x4;
      
            /**
      
             * Flag indicating that a call to measure() was skipped and should be done
      
             * instead when layout() is invoked.
      
             */
      
            static final int PFLAG3_MEASURE_NEEDED_BEFORE_LAYOUT = 0x8;
      
            /**
      
             * Flag indicating that an overridden method correctly called down to
      
             * the superclass implementation as required by the API spec.
      
             */
      
            static final int PFLAG3_CALLED_SUPER = 0x10;
      
            /**
      
             * Flag indicating that we're in the process of applying window insets.
      
             */
      
            static final int PFLAG3_APPLYING_INSETS = 0x20;
      
            /**
      
             * Flag indicating that we're in the process of fitting system windows using the old method.
      
             */
      
            static final int PFLAG3_FITTING_SYSTEM_WINDOWS = 0x40;
      
            /**
      
             * Flag indicating that nested scrolling is enabled for this view.
      
             * The view will optionally cooperate with views up its parent chain to allow for
      
             * integrated nested scrolling along the same axis.
      
             */
      
            static final int PFLAG3_NESTED_SCROLLING_ENABLED = 0x80;
      
            /**
      
             * Flag indicating that the bottom scroll indicator should be displayed
      
             * when this view can scroll up.
      
             */
      
            static final int PFLAG3_SCROLL_INDICATOR_TOP = 0x0100;
      
            /**
      
             * Flag indicating that the bottom scroll indicator should be displayed
      
             * when this view can scroll down.
      
             */
      
            static final int PFLAG3_SCROLL_INDICATOR_BOTTOM = 0x0200;
      
            /**
      
             * Flag indicating that the left scroll indicator should be displayed
      
             * when this view can scroll left.
      
             */
      
            static final int PFLAG3_SCROLL_INDICATOR_LEFT = 0x0400;
      
            /**
      
             * Flag indicating that the right scroll indicator should be displayed
      
             * when this view can scroll right.
      
             */
      
            static final int PFLAG3_SCROLL_INDICATOR_RIGHT = 0x0800;
      
            /**
      
             * Flag indicating that the start scroll indicator should be displayed
      
             * when this view can scroll in the start direction.
      
             */
      
            static final int PFLAG3_SCROLL_INDICATOR_START = 0x1000;
      
            /**
      
             * Flag indicating that the end scroll indicator should be displayed
      
             * when this view can scroll in the end direction.
      
             */
      
            static final int PFLAG3_SCROLL_INDICATOR_END = 0x2000;
      
            /* End of masks for mPrivateFlags3 */
      
            static final int DRAG_MASK = PFLAG2_DRAG_CAN_ACCEPT | PFLAG2_DRAG_HOVERED;
      
            static final int SCROLL_INDICATORS_NONE = 0x0000;
      
            /**
      
             * Mask for use with setFlags indicating bits used for indicating which
      
             * scroll indicators are enabled.
      
             */
      
            static final int SCROLL_INDICATORS_PFLAG3_MASK = PFLAG3_SCROLL_INDICATOR_TOP
      
                    | PFLAG3_SCROLL_INDICATOR_BOTTOM | PFLAG3_SCROLL_INDICATOR_LEFT
      
                    | PFLAG3_SCROLL_INDICATOR_RIGHT | PFLAG3_SCROLL_INDICATOR_START
      
                    | PFLAG3_SCROLL_INDICATOR_END;
      
            /**
      
             * Left-shift required to translate between public scroll indicator flags
      
             * and internal PFLAGS3 flags. When used as a right-shift, translates
      
             * PFLAGS3 flags to public flags.
      
             */
      
            static final int SCROLL_INDICATORS_TO_PFLAGS3_LSHIFT = 8;
      
            /** @hide */
      
            @Retention(RetentionPolicy.SOURCE)
      
            @IntDef(flag = true,
      
                    value = {
      
                            SCROLL_INDICATOR_TOP,
      
                            SCROLL_INDICATOR_BOTTOM,
      
                            SCROLL_INDICATOR_LEFT,
      
                            SCROLL_INDICATOR_RIGHT,
      
                            SCROLL_INDICATOR_START,
      
                            SCROLL_INDICATOR_END,
      
                    })
      
            public @interface ScrollIndicators {}
      
            /**
      
             * Scroll indicator direction for the top edge of the view.
      
             *
      
             * @see #setScrollIndicators(int)
      
             * @see #setScrollIndicators(int, int)
      
             * @see #getScrollIndicators()
      
             */
      
            public static final int SCROLL_INDICATOR_TOP =
      
                    PFLAG3_SCROLL_INDICATOR_TOP >> SCROLL_INDICATORS_TO_PFLAGS3_LSHIFT;
      
            /**
      
             * Scroll indicator direction for the bottom edge of the view.
      
             *
      
             * @see #setScrollIndicators(int)
      
             * @see #setScrollIndicators(int, int)
      
             * @see #getScrollIndicators()
      
             */
      
            public static final int SCROLL_INDICATOR_BOTTOM =
      
                    PFLAG3_SCROLL_INDICATOR_BOTTOM >> SCROLL_INDICATORS_TO_PFLAGS3_LSHIFT;
      
            /**
      
             * Scroll indicator direction for the left edge of the view.
      
             *
      
             * @see #setScrollIndicators(int)
      
             * @see #setScrollIndicators(int, int)
      
             * @see #getScrollIndicators()
      
             */
      
            public static final int SCROLL_INDICATOR_LEFT =
      
                    PFLAG3_SCROLL_INDICATOR_LEFT >> SCROLL_INDICATORS_TO_PFLAGS3_LSHIFT;
      
            /**
      
             * Scroll indicator direction for the right edge of the view.
      
             *
      
             * @see #setScrollIndicators(int)
      
             * @see #setScrollIndicators(int, int)
      
             * @see #getScrollIndicators()
      
             */
      
            public static final int SCROLL_INDICATOR_RIGHT =
      
                    PFLAG3_SCROLL_INDICATOR_RIGHT >> SCROLL_INDICATORS_TO_PFLAGS3_LSHIFT;
      
            /**
      
             * Scroll indicator direction for the starting edge of the view.
      
             * <p>
      
             * Resolved according to the view's layout direction, see
      
             * {@link #getLayoutDirection()} for more information.
      
             *
      
             * @see #setScrollIndicators(int)
      
             * @see #setScrollIndicators(int, int)
      
             * @see #getScrollIndicators()
      
             */
      
            public static final int SCROLL_INDICATOR_START =
      
                    PFLAG3_SCROLL_INDICATOR_START >> SCROLL_INDICATORS_TO_PFLAGS3_LSHIFT;
      
            /**
      
             * Scroll indicator direction for the ending edge of the view.
      
             * <p>
      
             * Resolved according to the view's layout direction, see
      
             * {@link #getLayoutDirection()} for more information.
      
             *
      
             * @see #setScrollIndicators(int)
      
             * @see #setScrollIndicators(int, int)
      
             * @see #getScrollIndicators()
      
             */
      
            public static final int SCROLL_INDICATOR_END =
      
                    PFLAG3_SCROLL_INDICATOR_END >> SCROLL_INDICATORS_TO_PFLAGS3_LSHIFT;
      
            /**
      
             * <p>Indicates that we are allowing {@link ViewStructure} to traverse
      
             * into this view.<p>
      
             */
      
            static final int PFLAG3_ASSIST_BLOCKED = 0x4000;
      
            /**
      
             * Always allow a user to over-scroll this view, provided it is a
      
             * view that can scroll.
      
             *
      
             * @see #getOverScrollMode()
      
             * @see #setOverScrollMode(int)
      
             */
      
            public static final int OVER_SCROLL_ALWAYS = 0;
      
            /**
      
             * Allow a user to over-scroll this view only if the content is large
      
             * enough to meaningfully scroll, provided it is a view that can scroll.
      
             *
      
             * @see #getOverScrollMode()
      
             * @see #setOverScrollMode(int)
      
             */
      
            public static final int OVER_SCROLL_IF_CONTENT_SCROLLS = 1;
      
            /**
      
             * Never allow a user to over-scroll this view.
      
             *
      
             * @see #getOverScrollMode()
      
             * @see #setOverScrollMode(int)
      
             */
      
            public static final int OVER_SCROLL_NEVER = 2;
      
            /**
      
             * Special constant for {@link #setSystemUiVisibility(int)}: View has
      
             * requested the system UI (status bar) to be visible (the default).
      
             *
      
             * @see #setSystemUiVisibility(int)
      
             */
      
            public static final int SYSTEM_UI_FLAG_VISIBLE = 0;
      
            /**
      
             * Flag for {@link #setSystemUiVisibility(int)}: View has requested the
      
             * system UI to enter an unobtrusive "low profile" mode.
      
             *
      
             * <p>This is for use in games, book readers, video players, or any other
      
             * "immersive" application where the usual system chrome is deemed too distracting.
      
             *
      
             * <p>In low profile mode, the status bar and/or navigation icons may dim.
      
             *
      
             * @see #setSystemUiVisibility(int)
      
             */
      
            public static final int SYSTEM_UI_FLAG_LOW_PROFILE = 0x00000001;
      
            /**
      
             * Flag for {@link #setSystemUiVisibility(int)}: View has requested that the
      
             * system navigation be temporarily hidden.
      
             *
      
             * <p>This is an even less obtrusive state than that called for by
      
             * {@link #SYSTEM_UI_FLAG_LOW_PROFILE}; on devices that draw essential navigation controls
      
             * (Home, Back, and the like) on screen, <code>SYSTEM_UI_FLAG_HIDE_NAVIGATION</code> will cause
      
             * those to disappear. This is useful (in conjunction with the
      
             * {@link android.view.WindowManager.LayoutParams#FLAG_FULLSCREEN FLAG_FULLSCREEN} and
      
             * {@link android.view.WindowManager.LayoutParams#FLAG_LAYOUT_IN_SCREEN FLAG_LAYOUT_IN_SCREEN}
      
             * window flags) for displaying content using every last pixel on the display.
      
             *
      
             * <p>There is a limitation: because navigation controls are so important, the least user
      
             * interaction will cause them to reappear immediately.  When this happens, both
      
             * this flag and {@link #SYSTEM_UI_FLAG_FULLSCREEN} will be cleared automatically,
      
             * so that both elements reappear at the same time.
      
             *
      
             * @see #setSystemUiVisibility(int)
      
             */
      
            public static final int SYSTEM_UI_FLAG_HIDE_NAVIGATION = 0x00000002;
      
            /**
      
             * Flag for {@link #setSystemUiVisibility(int)}: View has requested to go
      
             * into the normal fullscreen mode so that its content can take over the screen
      
             * while still allowing the user to interact with the application.
      
             *
      
             * <p>This has the same visual effect as
      
             * {@link android.view.WindowManager.LayoutParams#FLAG_FULLSCREEN
      
             * WindowManager.LayoutParams.FLAG_FULLSCREEN},
      
             * meaning that non-critical screen decorations (such as the status bar) will be
      
             * hidden while the user is in the View's window, focusing the experience on
      
             * that content.  Unlike the window flag, if you are using ActionBar in
      
             * overlay mode with {@link Window#FEATURE_ACTION_BAR_OVERLAY
      
             * Window.FEATURE_ACTION_BAR_OVERLAY}, then enabling this flag will also
      
             * hide the action bar.
      
             *
      
             * <p>This approach to going fullscreen is best used over the window flag when
      
             * it is a transient state -- that is, the application does this at certain
      
             * points in its user interaction where it wants to allow the user to focus
      
             * on content, but not as a continuous state.  For situations where the application
      
             * would like to simply stay full screen the entire time (such as a game that
      
             * wants to take over the screen), the
      
             * {@link android.view.WindowManager.LayoutParams#FLAG_FULLSCREEN window flag}
      
             * is usually a better approach.  The state set here will be removed by the system
      
             * in various situations (such as the user moving to another application) like
      
             * the other system UI states.
      
             *
      
             * <p>When using this flag, the application should provide some easy facility
      
             * for the user to go out of it.  A common example would be in an e-book
      
             * reader, where tapping on the screen brings back whatever screen and UI
      
             * decorations that had been hidden while the user was immersed in reading
      
             * the book.
      
             *
      
             * @see #setSystemUiVisibility(int)
      
             */
      
            public static final int SYSTEM_UI_FLAG_FULLSCREEN = 0x00000004;
      
            /**
      
             * Flag for {@link #setSystemUiVisibility(int)}: When using other layout
      
             * flags, we would like a stable view of the content insets given to
      
             * {@link #fitSystemWindows(Rect)}.  This means that the insets seen there
      
             * will always represent the worst case that the application can expect
      
             * as a continuous state.  In the stock Android UI this is the space for
      
             * the system bar, nav bar, and status bar, but not more transient elements
      
             * such as an input method.
      
             *
      
             * The stable layout your UI sees is based on the system UI modes you can
      
             * switch to.  That is, if you specify {@link #SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN}
      
             * then you will get a stable layout for changes of the
      
             * {@link #SYSTEM_UI_FLAG_FULLSCREEN} mode; if you specify
      
             * {@link #SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN} and
      
             * {@link #SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION}, then you can transition
      
             * to {@link #SYSTEM_UI_FLAG_FULLSCREEN} and {@link #SYSTEM_UI_FLAG_HIDE_NAVIGATION}
      
             * with a stable layout.  (Note that you should avoid using
      
             * {@link #SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION} by itself.)
      
             *
      
             * If you have set the window flag {@link WindowManager.LayoutParams#FLAG_FULLSCREEN}
      
             * to hide the status bar (instead of using {@link #SYSTEM_UI_FLAG_FULLSCREEN}),
      
             * then a hidden status bar will be considered a "stable" state for purposes
      
             * here.  This allows your UI to continually hide the status bar, while still
      
             * using the system UI flags to hide the action bar while still retaining
      
             * a stable layout.  Note that changing the window fullscreen flag will never
      
             * provide a stable layout for a clean transition.
      
             *
      
             * <p>If you are using ActionBar in
      
             * overlay mode with {@link Window#FEATURE_ACTION_BAR_OVERLAY
      
             * Window.FEATURE_ACTION_BAR_OVERLAY}, this flag will also impact the
      
             * insets it adds to those given to the application.
      
             */
      
            public static final int SYSTEM_UI_FLAG_LAYOUT_STABLE = 0x00000100;
      
            /**
      
             * Flag for {@link #setSystemUiVisibility(int)}: View would like its window
      
             * to be laid out as if it has requested
      
             * {@link #SYSTEM_UI_FLAG_HIDE_NAVIGATION}, even if it currently hasn't.  This
      
             * allows it to avoid artifacts when switching in and out of that mode, at
      
             * the expense that some of its user interface may be covered by screen
      
             * decorations when they are shown.  You can perform layout of your inner
      
             * UI elements to account for the navigation system UI through the
      
             * {@link #fitSystemWindows(Rect)} method.
      
             */
      
            public static final int SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION = 0x00000200;
      
            /**
      
             * Flag for {@link #setSystemUiVisibility(int)}: View would like its window
      
             * to be laid out as if it has requested
      
             * {@link #SYSTEM_UI_FLAG_FULLSCREEN}, even if it currently hasn't.  This
      
             * allows it to avoid artifacts when switching in and out of that mode, at
      
             * the expense that some of its user interface may be covered by screen
      
             * decorations when they are shown.  You can perform layout of your inner
      
             * UI elements to account for non-fullscreen system UI through the
      
             * {@link #fitSystemWindows(Rect)} method.
      
             */
      
            public static final int SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN = 0x00000400;
      
            /**
      
             * Flag for {@link #setSystemUiVisibility(int)}: View would like to remain interactive when
      
             * hiding the navigation bar with {@link #SYSTEM_UI_FLAG_HIDE_NAVIGATION}.  If this flag is
      
             * not set, {@link #SYSTEM_UI_FLAG_HIDE_NAVIGATION} will be force cleared by the system on any
      
             * user interaction.
      
             * <p>Since this flag is a modifier for {@link #SYSTEM_UI_FLAG_HIDE_NAVIGATION}, it only
      
             * has an effect when used in combination with that flag.</p>
      
             */
      
            public static final int SYSTEM_UI_FLAG_IMMERSIVE = 0x00000800;
      
            /**
      
             * Flag for {@link #setSystemUiVisibility(int)}: View would like to remain interactive when
      
             * hiding the status bar with {@link #SYSTEM_UI_FLAG_FULLSCREEN} and/or hiding the navigation
      
             * bar with {@link #SYSTEM_UI_FLAG_HIDE_NAVIGATION}.  Use this flag to create an immersive
      
             * experience while also hiding the system bars.  If this flag is not set,
      
             * {@link #SYSTEM_UI_FLAG_HIDE_NAVIGATION} will be force cleared by the system on any user
      
             * interaction, and {@link #SYSTEM_UI_FLAG_FULLSCREEN} will be force-cleared by the system
      
             * if the user swipes from the top of the screen.
      
             * <p>When system bars are hidden in immersive mode, they can be revealed temporarily with
      
             * system gestures, such as swiping from the top of the screen.  These transient system bars
      
             * will overlay app’s content, may have some degree of transparency, and will automatically
      
             * hide after a short timeout.
      
             * </p><p>Since this flag is a modifier for {@link #SYSTEM_UI_FLAG_FULLSCREEN} and
      
             * {@link #SYSTEM_UI_FLAG_HIDE_NAVIGATION}, it only has an effect when used in combination
      
             * with one or both of those flags.</p>
      
             */
      
            public static final int SYSTEM_UI_FLAG_IMMERSIVE_STICKY = 0x00001000;
      
            /**
      
             * Flag for {@link #setSystemUiVisibility(int)}: Requests the status bar to draw in a mode that
      
             * is compatible with light status bar backgrounds.
      
             *
      
             * <p>For this to take effect, the window must request
      
             * {@link android.view.WindowManager.LayoutParams#FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS
      
             *         FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS} but not
      
             * {@link android.view.WindowManager.LayoutParams#FLAG_TRANSLUCENT_STATUS
      
             *         FLAG_TRANSLUCENT_STATUS}.
      
             *
      
             * @see android.R.attr#windowLightStatusBar
      
             */
      
            public static final int SYSTEM_UI_FLAG_LIGHT_STATUS_BAR = 0x00002000;
      
            /**
      
             * @deprecated Use {@link #SYSTEM_UI_FLAG_LOW_PROFILE} instead.
      
             */
      
            public static final int STATUS_BAR_HIDDEN = SYSTEM_UI_FLAG_LOW_PROFILE;
      
            /**
      
             * @deprecated Use {@link #SYSTEM_UI_FLAG_VISIBLE} instead.
      
             */
      
            public static final int STATUS_BAR_VISIBLE = SYSTEM_UI_FLAG_VISIBLE;
      
            /**
      
             * @hide
      
             *
      
             * NOTE: This flag may only be used in subtreeSystemUiVisibility. It is masked
      
             * out of the public fields to keep the undefined bits out of the developer's way.
      
             *
      
             * Flag to make the status bar not expandable.  Unless you also
      
             * set {@link #STATUS_BAR_DISABLE_NOTIFICATION_ICONS}, new notifications will continue to show.
      
             */
      
            public static final int STATUS_BAR_DISABLE_EXPAND = 0x00010000;
      
            /**
      
             * @hide
      
             *
      
             * NOTE: This flag may only be used in subtreeSystemUiVisibility. It is masked
      
             * out of the public fields to keep the undefined bits out of the developer's way.
      
             *
      
             * Flag to hide notification icons and scrolling ticker text.
      
             */
      
            public static final int STATUS_BAR_DISABLE_NOTIFICATION_ICONS = 0x00020000;
      
            /**
      
             * @hide
      
             *
      
             * NOTE: This flag may only be used in subtreeSystemUiVisibility. It is masked
      
             * out of the public fields to keep the undefined bits out of the developer's way.
      
             *
      
             * Flag to disable incoming notification alerts.  This will not block
      
             * icons, but it will block sound, vibrating and other visual or aural notifications.
      
             */
      
            public static final int STATUS_BAR_DISABLE_NOTIFICATION_ALERTS = 0x00040000;
      
            /**
      
             * @hide
      
             *
      
             * NOTE: This flag may only be used in subtreeSystemUiVisibility. It is masked
      
             * out of the public fields to keep the undefined bits out of the developer's way.
      
             *
      
             * Flag to hide only the scrolling ticker.  Note that
      
             * {@link #STATUS_BAR_DISABLE_NOTIFICATION_ICONS} implies
      
             * {@link #STATUS_BAR_DISABLE_NOTIFICATION_TICKER}.
      
             */
      
            public static final int STATUS_BAR_DISABLE_NOTIFICATION_TICKER = 0x00080000;
      
            /**
      
             * @hide
      
             *
      
             * NOTE: This flag may only be used in subtreeSystemUiVisibility. It is masked
      
             * out of the public fields to keep the undefined bits out of the developer's way.
      
             *
      
             * Flag to hide the center system info area.
      
             */
      
            public static final int STATUS_BAR_DISABLE_SYSTEM_INFO = 0x00100000;
      
            /**
      
             * @hide
      
             *
      
             * NOTE: This flag may only be used in subtreeSystemUiVisibility. It is masked
      
             * out of the public fields to keep the undefined bits out of the developer's way.
      
             *
      
             * Flag to hide only the home button.  Don't use this
      
             * unless you're a special part of the system UI (i.e., setup wizard, keyguard).
      
             */
      
            public static final int STATUS_BAR_DISABLE_HOME = 0x00200000;
      
            /**
      
             * @hide
      
             *
      
             * NOTE: This flag may only be used in subtreeSystemUiVisibility. It is masked
      
             * out of the public fields to keep the undefined bits out of the developer's way.
      
             *
      
             * Flag to hide only the back button. Don't use this
      
             * unless you're a special part of the system UI (i.e., setup wizard, keyguard).
      
             */
      
            public static final int STATUS_BAR_DISABLE_BACK = 0x00400000;
      
            /**
      
             * @hide
      
             *
      
             * NOTE: This flag may only be used in subtreeSystemUiVisibility. It is masked
      
             * out of the public fields to keep the undefined bits out of the developer's way.
      
             *
      
             * Flag to hide only the clock.  You might use this if your activity has
      
             * its own clock making the status bar's clock redundant.
      
             */
      
            public static final int STATUS_BAR_DISABLE_CLOCK = 0x00800000;
      
            /**
      
             * @hide
      
             *
      
             * NOTE: This flag may only be used in subtreeSystemUiVisibility. It is masked
      
             * out of the public fields to keep the undefined bits out of the developer's way.
      
             *
      
             * Flag to hide only the recent apps button. Don't use this
      
             * unless you're a special part of the system UI (i.e., setup wizard, keyguard).
      
             */
      
            public static final int STATUS_BAR_DISABLE_RECENT = 0x01000000;
      
            /**
      
             * @hide
      
             *
      
             * NOTE: This flag may only be used in subtreeSystemUiVisibility. It is masked
      
             * out of the public fields to keep the undefined bits out of the developer's way.
      
             *
      
             * Flag to disable the global search gesture. Don't use this
      
             * unless you're a special part of the system UI (i.e., setup wizard, keyguard).
      
             */
      
            public static final int STATUS_BAR_DISABLE_SEARCH = 0x02000000;
      
            /**
      
             * @hide
      
             *
      
             * NOTE: This flag may only be used in subtreeSystemUiVisibility. It is masked
      
             * out of the public fields to keep the undefined bits out of the developer's way.
      
             *
      
             * Flag to specify that the status bar is displayed in transient mode.
      
             */
      
            public static final int STATUS_BAR_TRANSIENT = 0x04000000;
      
            /**
      
             * @hide
      
             *
      
             * NOTE: This flag may only be used in subtreeSystemUiVisibility. It is masked
      
             * out of the public fields to keep the undefined bits out of the developer's way.
      
             *
      
             * Flag to specify that the navigation bar is displayed in transient mode.
      
             */
      
            public static final int NAVIGATION_BAR_TRANSIENT = 0x08000000;
      
            /**
      
             * @hide
      
             *
      
             * NOTE: This flag may only be used in subtreeSystemUiVisibility. It is masked
      
             * out of the public fields to keep the undefined bits out of the developer's way.
      
             *
      
             * Flag to specify that the hidden status bar would like to be shown.
      
             */
      
            public static final int STATUS_BAR_UNHIDE = 0x10000000;
      
            /**
      
             * @hide
      
             *
      
             * NOTE: This flag may only be used in subtreeSystemUiVisibility. It is masked
      
             * out of the public fields to keep the undefined bits out of the developer's way.
      
             *
      
             * Flag to specify that the hidden navigation bar would like to be shown.
      
             */
      
            public static final int NAVIGATION_BAR_UNHIDE = 0x20000000;
      
            /**
      
             * @hide
      
             *
      
             * NOTE: This flag may only be used in subtreeSystemUiVisibility. It is masked
      
             * out of the public fields to keep the undefined bits out of the developer's way.
      
             *
      
             * Flag to specify that the status bar is displayed in translucent mode.
      
             */
      
            public static final int STATUS_BAR_TRANSLUCENT = 0x40000000;
      
            /**
      
             * @hide
      
             *
      
             * NOTE: This flag may only be used in subtreeSystemUiVisibility. It is masked
      
             * out of the public fields to keep the undefined bits out of the developer's way.
      
             *
      
             * Flag to specify that the navigation bar is displayed in translucent mode.
      
             */
      
            public static final int NAVIGATION_BAR_TRANSLUCENT = 0x80000000;
      
            /**
      
             * @hide
      
             *
      
             * Whether Recents is visible or not.
      
             */
      
            public static final int RECENT_APPS_VISIBLE = 0x00004000;
      
            /**
      
             * @hide
      
             *
      
             * Makes system ui transparent.
      
             */
      
            public static final int SYSTEM_UI_TRANSPARENT = 0x00008000;
      
            /**
      
             * @hide
      
             */
      
            public static final int PUBLIC_STATUS_BAR_VISIBILITY_MASK = 0x00003FFF;
      
            /**
      
             * These are the system UI flags that can be cleared by events outside
      
             * of an application.  Currently this is just the ability to tap on the
      
             * screen while hiding the navigation bar to have it return.
      
             * @hide
      
             */
      
            public static final int SYSTEM_UI_CLEARABLE_FLAGS =
      
                    SYSTEM_UI_FLAG_LOW_PROFILE | SYSTEM_UI_FLAG_HIDE_NAVIGATION
      
                    | SYSTEM_UI_FLAG_FULLSCREEN;
      
            /**
      
             * Flags that can impact the layout in relation to system UI.
      
             */
      
            public static final int SYSTEM_UI_LAYOUT_FLAGS =
      
                    SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
      
                    | SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN;
      
            /** @hide */
      
            @IntDef(flag = true,
      
                    value = { FIND_VIEWS_WITH_TEXT, FIND_VIEWS_WITH_CONTENT_DESCRIPTION })
      
            @Retention(RetentionPolicy.SOURCE)
      
            public @interface FindViewFlags {}
      
            /**
      
             * Find views that render the specified text.
      
             *
      
             * @see #findViewsWithText(ArrayList, CharSequence, int)
      
             */
      
            public static final int FIND_VIEWS_WITH_TEXT = 0x00000001;
      
            /**
      
             * Find find views that contain the specified content description.
      
             *
      
             * @see #findViewsWithText(ArrayList, CharSequence, int)
      
             */
      
            public static final int FIND_VIEWS_WITH_CONTENT_DESCRIPTION = 0x00000002;
      
            /**
      
             * Find views that contain {@link AccessibilityNodeProvider}. Such
      
             * a View is a root of virtual view hierarchy and may contain the searched
      
             * text. If this flag is set Views with providers are automatically
      
             * added and it is a responsibility of the client to call the APIs of
      
             * the provider to determine whether the virtual tree rooted at this View
      
             * contains the text, i.e. getting the list of {@link AccessibilityNodeInfo}s
      
             * representing the virtual views with this text.
      
             *
      
             * @see #findViewsWithText(ArrayList, CharSequence, int)
      
             *
      
             * @hide
      
             */
      
            public static final int FIND_VIEWS_WITH_ACCESSIBILITY_NODE_PROVIDERS = 0x00000004;
      
            /**
      
             * The undefined cursor position.
      
             *
      
             * @hide
      
             */
      
            public static final int ACCESSIBILITY_CURSOR_POSITION_UNDEFINED = -1;
      
            /**
      
             * Indicates that the screen has changed state and is now off.
      
             *
      
             * @see #onScreenStateChanged(int)
      
             */
      
            public static final int SCREEN_STATE_OFF = 0x0;
      
            /**
      
             * Indicates that the screen has changed state and is now on.
      
             *
      
             * @see #onScreenStateChanged(int)
      
             */
      
            public static final int SCREEN_STATE_ON = 0x1;
      
            /**
      
             * Indicates no axis of view scrolling.
      
             */
      
            public static final int SCROLL_AXIS_NONE = 0;
      
            /**
      
             * Indicates scrolling along the horizontal axis.
      
             */
      
            public static final int SCROLL_AXIS_HORIZONTAL = 1 << 0;
      
            /**
      
             * Indicates scrolling along the vertical axis.
      
             */
      
            public static final int SCROLL_AXIS_VERTICAL = 1 << 1;
      
            /**
      
             * Controls the over-scroll mode for this view.
      
             * See {@link #overScrollBy(int, int, int, int, int, int, int, int, boolean)},
      
             * {@link #OVER_SCROLL_ALWAYS}, {@link #OVER_SCROLL_IF_CONTENT_SCROLLS},
      
             * and {@link #OVER_SCROLL_NEVER}.
      
             */
      
            private int mOverScrollMode;
      
            /**
      
             * The parent this view is attached to.
      
             * {@hide}
      
             *
      
             * @see #getParent()
      
             */
      
            protected ViewParent mParent;
      
            /**
      
             * {@hide}
      
             */
      
            AttachInfo mAttachInfo;
      
            /**
      
             * {@hide}
      
             */
      
            @ViewDebug.ExportedProperty(flagMapping = {
      
                @ViewDebug.FlagToString(mask = PFLAG_FORCE_LAYOUT, equals = PFLAG_FORCE_LAYOUT,
      
                        name = "FORCE_LAYOUT"),
      
                @ViewDebug.FlagToString(mask = PFLAG_LAYOUT_REQUIRED, equals = PFLAG_LAYOUT_REQUIRED,
      
                        name = "LAYOUT_REQUIRED"),
      
                @ViewDebug.FlagToString(mask = PFLAG_DRAWING_CACHE_VALID, equals = PFLAG_DRAWING_CACHE_VALID,
      
                    name = "DRAWING_CACHE_INVALID", outputIf = false),
      
                @ViewDebug.FlagToString(mask = PFLAG_DRAWN, equals = PFLAG_DRAWN, name = "DRAWN", outputIf = true),
      
                @ViewDebug.FlagToString(mask = PFLAG_DRAWN, equals = PFLAG_DRAWN, name = "NOT_DRAWN", outputIf = false),
      
                @ViewDebug.FlagToString(mask = PFLAG_DIRTY_MASK, equals = PFLAG_DIRTY_OPAQUE, name = "DIRTY_OPAQUE"),
      
                @ViewDebug.FlagToString(mask = PFLAG_DIRTY_MASK, equals = PFLAG_DIRTY, name = "DIRTY")
      
            }, formatToHexString = true)
      
            int mPrivateFlags;
      
            int mPrivateFlags2;
      
            int mPrivateFlags3;
      
            /**
      
             * This view's request for the visibility of the status bar.
      
             * @hide
      
             */
      
            @ViewDebug.ExportedProperty(flagMapping = {
      
                @ViewDebug.FlagToString(mask = SYSTEM_UI_FLAG_LOW_PROFILE,
      
                                        equals = SYSTEM_UI_FLAG_LOW_PROFILE,
      
                                        name = "SYSTEM_UI_FLAG_LOW_PROFILE", outputIf = true),
      
                @ViewDebug.FlagToString(mask = SYSTEM_UI_FLAG_HIDE_NAVIGATION,
      
                                        equals = SYSTEM_UI_FLAG_HIDE_NAVIGATION,
      
                                        name = "SYSTEM_UI_FLAG_HIDE_NAVIGATION", outputIf = true),
      
                @ViewDebug.FlagToString(mask = PUBLIC_STATUS_BAR_VISIBILITY_MASK,
      
                                        equals = SYSTEM_UI_FLAG_VISIBLE,
      
                                        name = "SYSTEM_UI_FLAG_VISIBLE", outputIf = true)
      
            }, formatToHexString = true)
      
            int mSystemUiVisibility;
      
            /**
      
             * Reference count for transient state.
      
             * @see #setHasTransientState(boolean)
      
             */
      
            int mTransientStateCount = 0;
      
            /**
      
             * Count of how many windows this view has been attached to.
      
             */
      
            int mWindowAttachCount;
      
            /**
      
             * The layout parameters associated with this view and used by the parent
      
             * {@link android.view.ViewGroup} to determine how this view should be
      
             * laid out.
      
             * {@hide}
      
             */
      
            protected ViewGroup.LayoutParams mLayoutParams;
      
            /**
      
             * The view flags hold various views states.
      
             * {@hide}
      
             */
      
            @ViewDebug.ExportedProperty(formatToHexString = true)
      
            int mViewFlags;
      
            static class TransformationInfo {
      
                /**
      
                 * The transform matrix for the View. This transform is calculated internally
      
                 * based on the translation, rotation, and scale properties.
      
                 *
      
                 * Do *not* use this variable directly; instead call getMatrix(), which will
      
                 * load the value from the View's RenderNode.
      
                 */
      
                private final Matrix mMatrix = new Matrix();
      
                /**
      
                 * The inverse transform matrix for the View. This transform is calculated
      
                 * internally based on the translation, rotation, and scale properties.
      
                 *
      
                 * Do *not* use this variable directly; instead call getInverseMatrix(),
      
                 * which will load the value from the View's RenderNode.
      
                 */
      
                private Matrix mInverseMatrix;
      
                /**
      
                 * The opacity of the View. This is a value from 0 to 1, where 0 means
      
                 * completely transparent and 1 means completely opaque.
      
                 */
      
                @ViewDebug.ExportedProperty
      
                float mAlpha = 1f;
      
                /**
      
                 * The opacity of the view as manipulated by the Fade transition. This is a hidden
      
                 * property only used by transitions, which is composited with the other alpha
      
                 * values to calculate the final visual alpha value.
      
                 */
      
                float mTransitionAlpha = 1f;
      
            }
      
            TransformationInfo mTransformationInfo;
      
            /**
      
             * Current clip bounds. to which all drawing of this view are constrained.
      
             */
      
            Rect mClipBounds = null;
      
            private boolean mLastIsOpaque;
      
            /**
      
             * The distance in pixels from the left edge of this view's parent
      
             * to the left edge of this view.
      
             * {@hide}
      
             */
      
            @ViewDebug.ExportedProperty(category = "layout")
      
            protected int mLeft;
      
            /**
      
             * The distance in pixels from the left edge of this view's parent
      
             * to the right edge of this view.
      
             * {@hide}
      
             */
      
            @ViewDebug.ExportedProperty(category = "layout")
      
            protected int mRight;
      
            /**
      
             * The distance in pixels from the top edge of this view's parent
      
             * to the top edge of this view.
      
             * {@hide}
      
             */
      
            @ViewDebug.ExportedProperty(category = "layout")
      
            protected int mTop;
      
            /**
      
             * The distance in pixels from the top edge of this view's parent
      
             * to the bottom edge of this view.
      
             * {@hide}
      
             */
      
            @ViewDebug.ExportedProperty(category = "layout")
      
            protected int mBottom;
      
            /**
      
             * The offset, in pixels, by which the content of this view is scrolled
      
             * horizontally.
      
             * {@hide}
      
             */
      
            @ViewDebug.ExportedProperty(category = "scrolling")
      
            protected int mScrollX;
      
            /**
      
             * The offset, in pixels, by which the content of this view is scrolled
      
             * vertically.
      
             * {@hide}
      
             */
      
            @ViewDebug.ExportedProperty(category = "scrolling")
      
            protected int mScrollY;
      
            /**
      
             * The left padding in pixels, that is the distance in pixels between the
      
             * left edge of this view and the left edge of its content.
      
             * {@hide}
      
             */
      
            @ViewDebug.ExportedProperty(category = "padding")
      
            protected int mPaddingLeft = 0;
      
            /**
      
             * The right padding in pixels, that is the distance in pixels between the
      
             * right edge of this view and the right edge of its content.
      
             * {@hide}
      
             */
      
            @ViewDebug.ExportedProperty(category = "padding")
      
            protected int mPaddingRight = 0;
      
            /**
      
             * The top padding in pixels, that is the distance in pixels between the
      
             * top edge of this view and the top edge of its content.
      
             * {@hide}
      
             */
      
            @ViewDebug.ExportedProperty(category = "padding")
      
            protected int mPaddingTop;
      
            /**
      
             * The bottom padding in pixels, that is the distance in pixels between the
      
             * bottom edge of this view and the bottom edge of its content.
      
             * {@hide}
      
             */
      
            @ViewDebug.ExportedProperty(category = "padding")
      
            protected int mPaddingBottom;
      
            /**
      
             * The layout insets in pixels, that is the distance in pixels between the
      
             * visible edges of this view its bounds.
      
             */
      
            private Insets mLayoutInsets;
      
            /**
      
             * Briefly describes the view and is primarily used for accessibility support.
      
             */
      
            private CharSequence mContentDescription;
      
            /**
      
             * Specifies the id of a view for which this view serves as a label for
      
             * accessibility purposes.
      
             */
      
            private int mLabelForId = View.NO_ID;
      
            /**
      
             * Predicate for matching labeled view id with its label for
      
             * accessibility purposes.
      
             */
      
            private MatchLabelForPredicate mMatchLabelForPredicate;
      
            /**
      
             * Specifies a view before which this one is visited in accessibility traversal.
      
             */
      
            private int mAccessibilityTraversalBeforeId = NO_ID;
      
            /**
      
             * Specifies a view after which this one is visited in accessibility traversal.
      
             */
      
            private int mAccessibilityTraversalAfterId = NO_ID;
      
            /**
      
             * Predicate for matching a view by its id.
      
             */
      
            private MatchIdPredicate mMatchIdPredicate;
      
            /**
      
             * Cache the paddingRight set by the user to append to the scrollbar's size.
      
             *
      
             * @hide
      
             */
      
            @ViewDebug.ExportedProperty(category = "padding")
      
            protected int mUserPaddingRight;
      
            /**
      
             * Cache the paddingBottom set by the user to append to the scrollbar's size.
      
             *
      
             * @hide
      
             */
      
            @ViewDebug.ExportedProperty(category = "padding")
      
            protected int mUserPaddingBottom;
      
            /**
      
             * Cache the paddingLeft set by the user to append to the scrollbar's size.
      
             *
      
             * @hide
      
             */
      
            @ViewDebug.ExportedProperty(category = "padding")
      
            protected int mUserPaddingLeft;
      
            /**
      
             * Cache the paddingStart set by the user to append to the scrollbar's size.
      
             *
      
             */
      
            @ViewDebug.ExportedProperty(category = "padding")
      
            int mUserPaddingStart;
      
            /**
      
             * Cache the paddingEnd set by the user to append to the scrollbar's size.
      
             *
      
             */
      
            @ViewDebug.ExportedProperty(category = "padding")
      
            int mUserPaddingEnd;
      
            /**
      
             * Cache initial left padding.
      
             *
      
             * @hide
      
             */
      
            int mUserPaddingLeftInitial;
      
            /**
      
             * Cache initial right padding.
      
             *
      
             * @hide
      
             */
      
            int mUserPaddingRightInitial;
      
            /**
      
             * Default undefined padding
      
             */
      
            private static final int UNDEFINED_PADDING = Integer.MIN_VALUE;
      
            /**
      
             * Cache if a left padding has been defined
      
             */
      
            private boolean mLeftPaddingDefined = false;
      
            /**
      
             * Cache if a right padding has been defined
      
             */
      
            private boolean mRightPaddingDefined = false;
      
            /**
      
             * @hide
      
             */
      
            int mOldWidthMeasureSpec = Integer.MIN_VALUE;
      
            /**
      
             * @hide
      
             */
      
            int mOldHeightMeasureSpec = Integer.MIN_VALUE;
      
            private LongSparseLongArray mMeasureCache;
      
            @ViewDebug.ExportedProperty(deepExport = true, prefix = "bg_")
      
            private Drawable mBackground;
      
            private TintInfo mBackgroundTint;
      
            @ViewDebug.ExportedProperty(deepExport = true, prefix = "fg_")
      
            private ForegroundInfo mForegroundInfo;
      
            private Drawable mScrollIndicatorDrawable;
      
            /**
      
             * RenderNode used for backgrounds.
      
             * <p>
      
             * When non-null and valid, this is expected to contain an up-to-date copy
      
             * of the background drawable. It is cleared on temporary detach, and reset
      
             * on cleanup.
      
             */
      
            private RenderNode mBackgroundRenderNode;
      
            private int mBackgroundResource;
      
            private boolean mBackgroundSizeChanged;
      
            private String mTransitionName;
      
            static class TintInfo {
      
                ColorStateList mTintList;
      
                PorterDuff.Mode mTintMode;
      
                boolean mHasTintMode;
      
                boolean mHasTintList;
      
            }
      
            private static class ForegroundInfo {
      
                private Drawable mDrawable;
      
                private TintInfo mTintInfo;
      
                private int mGravity = Gravity.FILL;
      
                private boolean mInsidePadding = true;
      
                private boolean mBoundsChanged = true;
      
                private final Rect mSelfBounds = new Rect();
      
                private final Rect mOverlayBounds = new Rect();
      
            }
      
            static class ListenerInfo {
      
                /**
      
                 * Listener used to dispatch focus change events.
      
                 * This field should be made private, so it is hidden from the SDK.
      
                 * {@hide}
      
                 */
      
                protected OnFocusChangeListener mOnFocusChangeListener;
      
                /**
      
                 * Listeners for layout change events.
      
                 */
      
                private ArrayList<OnLayoutChangeListener> mOnLayoutChangeListeners;
      
                protected OnScrollChangeListener mOnScrollChangeListener;
      
                /**
      
                 * Listeners for attach events.
      
                 */
      
                private CopyOnWriteArrayList<OnAttachStateChangeListener> mOnAttachStateChangeListeners;
      
                /**
      
                 * Listener used to dispatch click events.
      
                 * This field should be made private, so it is hidden from the SDK.
      
                 * {@hide}
      
                 */
      
                public OnClickListener mOnClickListener;
      
                /**
      
                 * Listener used to dispatch long click events.
      
                 * This field should be made private, so it is hidden from the SDK.
      
                 * {@hide}
      
                 */
      
                protected OnLongClickListener mOnLongClickListener;
      
                /**
      
                 * Listener used to dispatch context click events. This field should be made private, so it
      
                 * is hidden from the SDK.
      
                 * {@hide}
      
                 */
      
                protected OnContextClickListener mOnContextClickListener;
      
                /**
      
                 * Listener used to build the context menu.
      
                 * This field should be made private, so it is hidden from the SDK.
      
                 * {@hide}
      
                 */
      
                protected OnCreateContextMenuListener mOnCreateContextMenuListener;
      
                private OnKeyListener mOnKeyListener;
      
                private OnTouchListener mOnTouchListener;
      
                private OnHoverListener mOnHoverListener;
      
                private OnGenericMotionListener mOnGenericMotionListener;
      
                private OnDragListener mOnDragListener;
      
                private OnSystemUiVisibilityChangeListener mOnSystemUiVisibilityChangeListener;
      
                OnApplyWindowInsetsListener mOnApplyWindowInsetsListener;
      
            }
      
            ListenerInfo mListenerInfo;
      
            /**
      
             * The application environment this view lives in.
      
             * This field should be made private, so it is hidden from the SDK.
      
             * {@hide}
      
             */
      
            @ViewDebug.ExportedProperty(deepExport = true)
      
            protected Context mContext;
      
            private final Resources mResources;
      
            private ScrollabilityCache mScrollCache;
      
            private int[] mDrawableState = null;
      
            ViewOutlineProvider mOutlineProvider = ViewOutlineProvider.BACKGROUND;
      
            /**
      
             * Animator that automatically runs based on state changes.
      
             */
      
            private StateListAnimator mStateListAnimator;
      
            /**
      
             * When this view has focus and the next focus is {@link #FOCUS_LEFT},
      
             * the user may specify which view to go to next.
      
             */
      
            private int mNextFocusLeftId = View.NO_ID;
      
            /**
      
             * When this view has focus and the next focus is {@link #FOCUS_RIGHT},
      
             * the user may specify which view to go to next.
      
             */
      
            private int mNextFocusRightId = View.NO_ID;
      
            /**
      
             * When this view has focus and the next focus is {@link #FOCUS_UP},
      
             * the user may specify which view to go to next.
      
             */
      
            private int mNextFocusUpId = View.NO_ID;
      
            /**
      
             * When this view has focus and the next focus is {@link #FOCUS_DOWN},
      
             * the user may specify which view to go to next.
      
             */
      
            private int mNextFocusDownId = View.NO_ID;
      
            /**
      
             * When this view has focus and the next focus is {@link #FOCUS_FORWARD},
      
             * the user may specify which view to go to next.
      
             */
      
            int mNextFocusForwardId = View.NO_ID;
      
            private CheckForLongPress mPendingCheckForLongPress;
      
            private CheckForTap mPendingCheckForTap = null;
      
            private PerformClick mPerformClick;
      
            private SendViewScrolledAccessibilityEvent mSendViewScrolledAccessibilityEvent;
      
            private UnsetPressedState mUnsetPressedState;
      
            /**
      
             * Whether the long press's action has been invoked.  The tap's action is invoked on the
      
             * up event while a long press is invoked as soon as the long press duration is reached, so
      
             * a long press could be performed before the tap is checked, in which case the tap's action
      
             * should not be invoked.
      
             */
      
            private boolean mHasPerformedLongPress;
      
            /**
      
             * Whether a context click button is currently pressed down. This is true when the stylus is
      
             * touching the screen and the primary button has been pressed, or if a mouse's right button is
      
             * pressed. This is false once the button is released or if the stylus has been lifted.
      
             */
      
            private boolean mInContextButtonPress;
      
            /**
      
             * Whether the next up event should be ignored for the purposes of gesture recognition. This is
      
             * true after a stylus button press has occured, when the next up event should not be recognized
      
             * as a tap.
      
             */
      
            private boolean mIgnoreNextUpEvent;
      
            /**
      
             * The minimum height of the view. We'll try our best to have the height
      
             * of this view to at least this amount.
      
             */
      
            @ViewDebug.ExportedProperty(category = "measurement")
      
            private int mMinHeight;
      
            /**
      
             * The minimum width of the view. We'll try our best to have the width
      
             * of this view to at least this amount.
      
             */
      
            @ViewDebug.ExportedProperty(category = "measurement")
      
            private int mMinWidth;
      
            /**
      
             * The delegate to handle touch events that are physically in this view
      
             * but should be handled by another view.
      
             */
      
            private TouchDelegate mTouchDelegate = null;
      
            /**
      
             * Solid color to use as a background when creating the drawing cache. Enables
      
             * the cache to use 16 bit bitmaps instead of 32 bit.
      
             */
      
            private int mDrawingCacheBackgroundColor = 0;
      
            /**
      
             * Special tree observer used when mAttachInfo is null.
      
             */
      
            private ViewTreeObserver mFloatingTreeObserver;
      
            /**
      
             * Cache the touch slop from the context that created the view.
      
             */
      
            private int mTouchSlop;
      
            /**
      
             * Object that handles automatic animation of view properties.
      
             */
      
            private ViewPropertyAnimator mAnimator = null;
      
            /**
      
             * Flag indicating that a drag can cross window boundaries.  When
      
             * {@link #startDrag(ClipData, DragShadowBuilder, Object, int)} is called
      
             * with this flag set, all visible applications will be able to participate
      
             * in the drag operation and receive the dragged content.
      
             *
      
             * @hide
      
             */
      
            public static final int DRAG_FLAG_GLOBAL = 1;
      
            /**
      
             * Vertical scroll factor cached by {@link #getVerticalScrollFactor}.
      
             */
      
            private float mVerticalScrollFactor;
      
            /**
      
             * Position of the vertical scroll bar.
      
             */
      
            private int mVerticalScrollbarPosition;
      
            /**
      
             * Position the scroll bar at the default position as determined by the system.
      
             */
      
            public static final int SCROLLBAR_POSITION_DEFAULT = 0;
      
            /**
      
             * Position the scroll bar along the left edge.
      
             */
      
            public static final int SCROLLBAR_POSITION_LEFT = 1;
      
            /**
      
             * Position the scroll bar along the right edge.
      
             */
      
            public static final int SCROLLBAR_POSITION_RIGHT = 2;
      
            /**
      
             * Indicates that the view does not have a layer.
      
             *
      
             * @see #getLayerType()
      
             * @see #setLayerType(int, android.graphics.Paint)
      
             * @see #LAYER_TYPE_SOFTWARE
      
             * @see #LAYER_TYPE_HARDWARE
      
             */
      
            public static final int LAYER_TYPE_NONE = 0;
      
            /**
      
             * <p>Indicates that the view has a software layer. A software layer is backed
      
             * by a bitmap and causes the view to be rendered using Android's software
      
             * rendering pipeline, even if hardware acceleration is enabled.</p>
      
             *
      
             * <p>Software layers have various usages:</p>
      
             * <p>When the application is not using hardware acceleration, a software layer
      
             * is useful to apply a specific color filter and/or blending mode and/or
      
             * translucency to a view and all its children.</p>
      
             * <p>When the application is using hardware acceleration, a software layer
      
             * is useful to render drawing primitives not supported by the hardware
      
             * accelerated pipeline. It can also be used to cache a complex view tree
      
             * into a texture and reduce the complexity of drawing operations. For instance,
      
             * when animating a complex view tree with a translation, a software layer can
      
             * be used to render the view tree only once.</p>
      
             * <p>Software layers should be avoided when the affected view tree updates
      
             * often. Every update will require to re-render the software layer, which can
      
             * potentially be slow (particularly when hardware acceleration is turned on
      
             * since the layer will have to be uploaded into a hardware texture after every
      
             * update.)</p>
      
             *
      
             * @see #getLayerType()
      
             * @see #setLayerType(int, android.graphics.Paint)
      
             * @see #LAYER_TYPE_NONE
      
             * @see #LAYER_TYPE_HARDWARE
      
             */
      
            public static final int LAYER_TYPE_SOFTWARE = 1;
      
            /**
      
             * <p>Indicates that the view has a hardware layer. A hardware layer is backed
      
             * by a hardware specific texture (generally Frame Buffer Objects or FBO on
      
             * OpenGL hardware) and causes the view to be rendered using Android's hardware
      
             * rendering pipeline, but only if hardware acceleration is turned on for the
      
             * view hierarchy. When hardware acceleration is turned off, hardware layers
      
             * behave exactly as {@link #LAYER_TYPE_SOFTWARE software layers}.</p>
      
             *
      
             * <p>A hardware layer is useful to apply a specific color filter and/or
      
             * blending mode and/or translucency to a view and all its children.</p>
      
             * <p>A hardware layer can be used to cache a complex view tree into a
      
             * texture and reduce the complexity of drawing operations. For instance,
      
             * when animating a complex view tree with a translation, a hardware layer can
      
             * be used to render the view tree only once.</p>
      
             * <p>A hardware layer can also be used to increase the rendering quality when
      
             * rotation transformations are applied on a view. It can also be used to
      
             * prevent potential clipping issues when applying 3D transforms on a view.</p>
      
             *
      
             * @see #getLayerType()
      
             * @see #setLayerType(int, android.graphics.Paint)
      
             * @see #LAYER_TYPE_NONE
      
             * @see #LAYER_TYPE_SOFTWARE
      
             */
      
            public static final int LAYER_TYPE_HARDWARE = 2;
      
            @ViewDebug.ExportedProperty(category = "drawing", mapping = {
      
                    @ViewDebug.IntToString(from = LAYER_TYPE_NONE, to = "NONE"),
      
                    @ViewDebug.IntToString(from = LAYER_TYPE_SOFTWARE, to = "SOFTWARE"),
      
                    @ViewDebug.IntToString(from = LAYER_TYPE_HARDWARE, to = "HARDWARE")
      
            })
      
            int mLayerType = LAYER_TYPE_NONE;
      
            Paint mLayerPaint;
      
            /**
      
             * Set to true when drawing cache is enabled and cannot be created.
      
             *
      
             * @hide
      
             */
      
            public boolean mCachingFailed;
      
            private Bitmap mDrawingCache;
      
            private Bitmap mUnscaledDrawingCache;
      
            /**
      
             * RenderNode holding View properties, potentially holding a DisplayList of View content.
      
             * <p>
      
             * When non-null and valid, this is expected to contain an up-to-date copy
      
             * of the View content. Its DisplayList content is cleared on temporary detach and reset on
      
             * cleanup.
      
             */
      
            final RenderNode mRenderNode;
      
            /**
      
             * Set to true when the view is sending hover accessibility events because it
      
             * is the innermost hovered view.
      
             */
      
            private boolean mSendingHoverAccessibilityEvents;
      
            /**
      
             * Delegate for injecting accessibility functionality.
      
             */
      
            AccessibilityDelegate mAccessibilityDelegate;
      
            /**
      
             * The view's overlay layer. Developers get a reference to the overlay via getOverlay()
      
             * and add/remove objects to/from the overlay directly through the Overlay methods.
      
             */
      
            ViewOverlay mOverlay;
      
            /**
      
             * The currently active parent view for receiving delegated nested scrolling events.
      
             * This is set by {@link #startNestedScroll(int)} during a touch interaction and cleared
      
             * by {@link #stopNestedScroll()} at the same point where we clear
      
             * requestDisallowInterceptTouchEvent.
      
             */
      
            private ViewParent mNestedScrollingParent;
      
            /**
      
             * Consistency verifier for debugging purposes.
      
             * @hide
      
             */
      
            protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier =
      
                    InputEventConsistencyVerifier.isInstrumentationEnabled() ?
      
                            new InputEventConsistencyVerifier(this, 0) : null;
      
            private static final AtomicInteger sNextGeneratedId = new AtomicInteger(1);
      
            private int[] mTempNestedScrollConsumed;
      
            /**
      
             * An overlay is going to draw this View instead of being drawn as part of this
      
             * View's parent. mGhostView is the View in the Overlay that must be invalidated
      
             * when this view is invalidated.
      
             */
      
            GhostView mGhostView;
      
            /**
      
             * Holds pairs of adjacent attribute data: attribute name followed by its value.
      
             * @hide
      
             */
      
            @ViewDebug.ExportedProperty(category = "attributes", hasAdjacentMapping = true)
      
            public String[] mAttributes;
      
            /**
      
             * Maps a Resource id to its name.
      
             */
      
            private static SparseArray<String> mAttributeMap;
      
            /**
      
             * @hide
      
             */
      
            String mStartActivityRequestWho;
      
            /**
      
             * Simple constructor to use when creating a view from code.
      
             *
      
             * @param context The Context the view is running in, through which it can
      
             *        access the current theme, resources, etc.
      
             */
      
            public View(Context context) {
      
                mContext = context;
      
                mResources = context != null ? context.getResources() : null;
      
                mViewFlags = SOUND_EFFECTS_ENABLED | HAPTIC_FEEDBACK_ENABLED;
      
                // Set some flags defaults
      
                mPrivateFlags2 =
      
                        (LAYOUT_DIRECTION_DEFAULT << PFLAG2_LAYOUT_DIRECTION_MASK_SHIFT) |
      
                        (TEXT_DIRECTION_DEFAULT << PFLAG2_TEXT_DIRECTION_MASK_SHIFT) |
      
                        (PFLAG2_TEXT_DIRECTION_RESOLVED_DEFAULT) |
      
                        (TEXT_ALIGNMENT_DEFAULT << PFLAG2_TEXT_ALIGNMENT_MASK_SHIFT) |
      
                        (PFLAG2_TEXT_ALIGNMENT_RESOLVED_DEFAULT) |
      
                        (IMPORTANT_FOR_ACCESSIBILITY_DEFAULT << PFLAG2_IMPORTANT_FOR_ACCESSIBILITY_SHIFT);
      
                mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
      
                setOverScrollMode(OVER_SCROLL_IF_CONTENT_SCROLLS);
      
                mUserPaddingStart = UNDEFINED_PADDING;
      
                mUserPaddingEnd = UNDEFINED_PADDING;
      
                mRenderNode = RenderNode.create(getClass().getName(), this);
      
                if (!sCompatibilityDone && context != null) {
      
                    final int targetSdkVersion = context.getApplicationInfo().targetSdkVersion;
      
                    // Older apps may need this compatibility hack for measurement.
      
                    sUseBrokenMakeMeasureSpec = targetSdkVersion <= JELLY_BEAN_MR1;
      
                    // Older apps expect onMeasure() to always be called on a layout pass, regardless
      
                    // of whether a layout was requested on that View.
      
                    sIgnoreMeasureCache = targetSdkVersion < KITKAT;
      
                    Canvas.sCompatibilityRestore = targetSdkVersion < M;
      
                    // In M and newer, our widgets can pass a "hint" value in the size
      
                    // for UNSPECIFIED MeasureSpecs. This lets child views of scrolling containers
      
                    // know what the expected parent size is going to be, so e.g. list items can size
      
                    // themselves at 1/3 the size of their container. It breaks older apps though,
      
                    // specifically apps that use some popular open source libraries.
      
                    sUseZeroUnspecifiedMeasureSpec = targetSdkVersion < M;
      
                    sCompatibilityDone = true;
      
                }
      
            }
      
            /**
      
             * Constructor that is called when inflating a view from XML. This is called
      
             * when a view is being constructed from an XML file, supplying attributes
      
             * that were specified in the XML file. This version uses a default style of
      
             * 0, so the only attribute values applied are those in the Context's Theme
      
             * and the given AttributeSet.
      
             *
      
             * <p>
      
             * The method onFinishInflate() will be called after all children have been
      
             * added.
      
             *
      
             * @param context The Context the view is running in, through which it can
      
             *        access the current theme, resources, etc.
      
             * @param attrs The attributes of the XML tag that is inflating the view.
      
             * @see #View(Context, AttributeSet, int)
      
             */
      
            public View(Context context, @Nullable AttributeSet attrs) {
      
                this(context, attrs, 0);
      
            }
      
            /**
      
             * Perform inflation from XML and apply a class-specific base style from a
      
             * theme attribute. This constructor of View allows subclasses to use their
      
             * own base style when they are inflating. For example, a Button class's
      
             * constructor would call this version of the super class constructor and
      
             * supply <code>R.attr.buttonStyle</code> for <var>defStyleAttr</var>; this
      
             * allows the theme's button style to modify all of the base view attributes
      
             * (in particular its background) as well as the Button class's attributes.
      
             *
      
             * @param context The Context the view is running in, through which it can
      
             *        access the current theme, resources, etc.
      
             * @param attrs The attributes of the XML tag that is inflating the view.
      
             * @param defStyleAttr An attribute in the current theme that contains a
      
             *        reference to a style resource that supplies default values for
      
             *        the view. Can be 0 to not look for defaults.
      
             * @see #View(Context, AttributeSet)
      
             */
      
            public View(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
      
                this(context, attrs, defStyleAttr, 0);
      
            }
      
            /**
      
             * Perform inflation from XML and apply a class-specific base style from a
      
             * theme attribute or style resource. This constructor of View allows
      
             * subclasses to use their own base style when they are inflating.
      
             * <p>
      
             * When determining the final value of a particular attribute, there are
      
             * four inputs that come into play:
      
             * <ol>
      
             * <li>Any attribute values in the given AttributeSet.
      
             * <li>The style resource specified in the AttributeSet (named "style").
      
             * <li>The default style specified by <var>defStyleAttr</var>.
      
             * <li>The default style specified by <var>defStyleRes</var>.
      
             * <li>The base values in this theme.
      
             * </ol>
      
             * <p>
      
             * Each of these inputs is considered in-order, with the first listed taking
      
             * precedence over the following ones. In other words, if in the
      
             * AttributeSet you have supplied <code>&lt;Button * textColor="#ff000000"&gt;</code>
      
             * , then the button's text will <em>always</em> be black, regardless of
      
             * what is specified in any of the styles.
      
             *
      
             * @param context The Context the view is running in, through which it can
      
             *        access the current theme, resources, etc.
      
             * @param attrs The attributes of the XML tag that is inflating the view.
      
             * @param defStyleAttr An attribute in the current theme that contains a
      
             *        reference to a style resource that supplies default values for
      
             *        the view. Can be 0 to not look for defaults.
      
             * @param defStyleRes A resource identifier of a style resource that
      
             *        supplies default values for the view, used only if
      
             *        defStyleAttr is 0 or can not be found in the theme. Can be 0
      
             *        to not look for defaults.
      
             * @see #View(Context, AttributeSet, int)
      
             */
      
            public View(Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {
      
                this(context);
      
                final TypedArray a = context.obtainStyledAttributes(
      
                        attrs, com.android.internal.R.styleable.View, defStyleAttr, defStyleRes);
      
                if (mDebugViewAttributes) {
      
                    saveAttributeData(attrs, a);
      
                }
      
                Drawable background = null;
      
                int leftPadding = -1;
      
                int topPadding = -1;
      
                int rightPadding = -1;
      
                int bottomPadding = -1;
      
                int startPadding = UNDEFINED_PADDING;
      
                int endPadding = UNDEFINED_PADDING;
      
                int padding = -1;
      
                int viewFlagValues = 0;
      
                int viewFlagMasks = 0;
      
                boolean setScrollContainer = false;
      
                int x = 0;
      
                int y = 0;
      
                float tx = 0;
      
                float ty = 0;
      
                float tz = 0;
      
                float elevation = 0;
      
                float rotation = 0;
      
                float rotationX = 0;
      
                float rotationY = 0;
      
                float sx = 1f;
      
                float sy = 1f;
      
                boolean transformSet = false;
      
                int scrollbarStyle = SCROLLBARS_INSIDE_OVERLAY;
      
                int overScrollMode = mOverScrollMode;
      
                boolean initializeScrollbars = false;
      
                boolean initializeScrollIndicators = false;
      
                boolean startPaddingDefined = false;
      
                boolean endPaddingDefined = false;
      
                boolean leftPaddingDefined = false;
      
                boolean rightPaddingDefined = false;
      
                final int targetSdkVersion = context.getApplicationInfo().targetSdkVersion;
      
                final int N = a.getIndexCount();
      
                for (int i = 0; i < N; i++) {
      
                    int attr = a.getIndex(i);
      
                    switch (attr) {
      
                        case com.android.internal.R.styleable.View_background:
      
                            background = a.getDrawable(attr);
      
                            break;
      
                        case com.android.internal.R.styleable.View_padding:
      
                            padding = a.getDimensionPixelSize(attr, -1);
      
                            mUserPaddingLeftInitial = padding;
      
                            mUserPaddingRightInitial = padding;
      
                            leftPaddingDefined = true;
      
                            rightPaddingDefined = true;
      
                            break;
      
                         case com.android.internal.R.styleable.View_paddingLeft:
      
                            leftPadding = a.getDimensionPixelSize(attr, -1);
      
                            mUserPaddingLeftInitial = leftPadding;
      
                            leftPaddingDefined = true;
      
                            break;
      
                        case com.android.internal.R.styleable.View_paddingTop:
      
                            topPadding = a.getDimensionPixelSize(attr, -1);
      
                            break;
      
                        case com.android.internal.R.styleable.View_paddingRight:
      
                            rightPadding = a.getDimensionPixelSize(attr, -1);
      
                            mUserPaddingRightInitial = rightPadding;
      
                            rightPaddingDefined = true;
      
                            break;
      
                        case com.android.internal.R.styleable.View_paddingBottom:
      
                            bottomPadding = a.getDimensionPixelSize(attr, -1);
      
                            break;
      
                        case com.android.internal.R.styleable.View_paddingStart:
      
                            startPadding = a.getDimensionPixelSize(attr, UNDEFINED_PADDING);
      
                            startPaddingDefined = (startPadding != UNDEFINED_PADDING);
      
                            break;
      
                        case com.android.internal.R.styleable.View_paddingEnd:
      
                            endPadding = a.getDimensionPixelSize(attr, UNDEFINED_PADDING);
      
                            endPaddingDefined = (endPadding != UNDEFINED_PADDING);
      
                            break;
      
                        case com.android.internal.R.styleable.View_scrollX:
      
                            x = a.getDimensionPixelOffset(attr, 0);
      
                            break;
      
                        case com.android.internal.R.styleable.View_scrollY:
      
                            y = a.getDimensionPixelOffset(attr, 0);
      
                            break;
      
                        case com.android.internal.R.styleable.View_alpha:
      
                            setAlpha(a.getFloat(attr, 1f));
      
                            break;
      
                        case com.android.internal.R.styleable.View_transformPivotX:
      
                            setPivotX(a.getDimensionPixelOffset(attr, 0));
      
                            break;
      
                        case com.android.internal.R.styleable.View_transformPivotY:
      
                            setPivotY(a.getDimensionPixelOffset(attr, 0));
      
                            break;
      
                        case com.android.internal.R.styleable.View_translationX:
      
                            tx = a.getDimensionPixelOffset(attr, 0);
      
                            transformSet = true;
      
                            break;
      
                        case com.android.internal.R.styleable.View_translationY:
      
                            ty = a.getDimensionPixelOffset(attr, 0);
      
                            transformSet = true;
      
                            break;
      
                        case com.android.internal.R.styleable.View_translationZ:
      
                            tz = a.getDimensionPixelOffset(attr, 0);
      
                            transformSet = true;
      
                            break;
      
                        case com.android.internal.R.styleable.View_elevation:
      
                            elevation = a.getDimensionPixelOffset(attr, 0);
      
                            transformSet = true;
      
                            break;
      
                        case com.android.internal.R.styleable.View_rotation:
      
                            rotation = a.getFloat(attr, 0);
      
                            transformSet = true;
      
                            break;
      
                        case com.android.internal.R.styleable.View_rotationX:
      
                            rotationX = a.getFloat(attr, 0);
      
                            transformSet = true;
      
                            break;
      
                        case com.android.internal.R.styleable.View_rotationY:
      
                            rotationY = a.getFloat(attr, 0);
      
                            transformSet = true;
      
                            break;
      
                        case com.android.internal.R.styleable.View_scaleX:
      
                            sx = a.getFloat(attr, 1f);
      
                            transformSet = true;
      
                            break;
      
                        case com.android.internal.R.styleable.View_scaleY:
      
                            sy = a.getFloat(attr, 1f);
      
                            transformSet = true;
      
                            break;
      
                        case com.android.internal.R.styleable.View_id:
      
                            mID = a.getResourceId(attr, NO_ID);
      
                            break;
      
                        case com.android.internal.R.styleable.View_tag:
      
                            mTag = a.getText(attr);
      
                            break;
      
                        case com.android.internal.R.styleable.View_fitsSystemWindows:
      
                            if (a.getBoolean(attr, false)) {
      
                                viewFlagValues |= FITS_SYSTEM_WINDOWS;
      
                                viewFlagMasks |= FITS_SYSTEM_WINDOWS;
      
                            }
      
                            break;
      
                        case com.android.internal.R.styleable.View_focusable:
      
                            if (a.getBoolean(attr, false)) {
      
                                viewFlagValues |= FOCUSABLE;
      
                                viewFlagMasks |= FOCUSABLE_MASK;
      
                            }
      
                            break;
      
                        case com.android.internal.R.styleable.View_focusableInTouchMode:
      
                            if (a.getBoolean(attr, false)) {
      
                                viewFlagValues |= FOCUSABLE_IN_TOUCH_MODE | FOCUSABLE;
      
                                viewFlagMasks |= FOCUSABLE_IN_TOUCH_MODE | FOCUSABLE_MASK;
      
                            }
      
                            break;
      
                        case com.android.internal.R.styleable.View_clickable:
      
                            if (a.getBoolean(attr, false)) {
      
                                viewFlagValues |= CLICKABLE;
      
                                viewFlagMasks |= CLICKABLE;
      
                            }
      
                            break;
      
                        case com.android.internal.R.styleable.View_longClickable:
      
                            if (a.getBoolean(attr, false)) {
      
                                viewFlagValues |= LONG_CLICKABLE;
      
                                viewFlagMasks |= LONG_CLICKABLE;
      
                            }
      
                            break;
      
                        case com.android.internal.R.styleable.View_contextClickable:
      
                            if (a.getBoolean(attr, false)) {
      
                                viewFlagValues |= CONTEXT_CLICKABLE;
      
                                viewFlagMasks |= CONTEXT_CLICKABLE;
      
                            }
      
                            break;
      
                        case com.android.internal.R.styleable.View_saveEnabled:
      
                            if (!a.getBoolean(attr, true)) {
      
                                viewFlagValues |= SAVE_DISABLED;
      
                                viewFlagMasks |= SAVE_DISABLED_MASK;
      
                            }
      
                            break;
      
                        case com.android.internal.R.styleable.View_duplicateParentState:
      
                            if (a.getBoolean(attr, false)) {
      
                                viewFlagValues |= DUPLICATE_PARENT_STATE;
      
                                viewFlagMasks |= DUPLICATE_PARENT_STATE;
      
                            }
      
                            break;
      
                        case com.android.internal.R.styleable.View_visibility:
      
                            final int visibility = a.getInt(attr, 0);
      
                            if (visibility != 0) {
      
                                viewFlagValues |= VISIBILITY_FLAGS[visibility];
      
                                viewFlagMasks |= VISIBILITY_MASK;
      
                            }
      
                            break;
      
                        case com.android.internal.R.styleable.View_layoutDirection:
      
                            // Clear any layout direction flags (included resolved bits) already set
      
                            mPrivateFlags2 &=
      
                                    ~(PFLAG2_LAYOUT_DIRECTION_MASK | PFLAG2_LAYOUT_DIRECTION_RESOLVED_MASK);
      
                            // Set the layout direction flags depending on the value of the attribute
      
                            final int layoutDirection = a.getInt(attr, -1);
      
                            final int value = (layoutDirection != -1) ?
      
                                    LAYOUT_DIRECTION_FLAGS[layoutDirection] : LAYOUT_DIRECTION_DEFAULT;
      
                            mPrivateFlags2 |= (value << PFLAG2_LAYOUT_DIRECTION_MASK_SHIFT);
      
                            break;
      
                        case com.android.internal.R.styleable.View_drawingCacheQuality:
      
                            final int cacheQuality = a.getInt(attr, 0);
      
                            if (cacheQuality != 0) {
      
                                viewFlagValues |= DRAWING_CACHE_QUALITY_FLAGS[cacheQuality];
      
                                viewFlagMasks |= DRAWING_CACHE_QUALITY_MASK;
      
                            }
      
                            break;
      
                        case com.android.internal.R.styleable.View_contentDescription:
      
                            setContentDescription(a.getString(attr));
      
                            break;
      
                        case com.android.internal.R.styleable.View_accessibilityTraversalBefore:
      
                            setAccessibilityTraversalBefore(a.getResourceId(attr, NO_ID));
      
                            break;
      
                        case com.android.internal.R.styleable.View_accessibilityTraversalAfter:
      
                            setAccessibilityTraversalAfter(a.getResourceId(attr, NO_ID));
      
                            break;
      
                        case com.android.internal.R.styleable.View_labelFor:
      
                            setLabelFor(a.getResourceId(attr, NO_ID));
      
                            break;
      
                        case com.android.internal.R.styleable.View_soundEffectsEnabled:
      
                            if (!a.getBoolean(attr, true)) {
      
                                viewFlagValues &= ~SOUND_EFFECTS_ENABLED;
      
                                viewFlagMasks |= SOUND_EFFECTS_ENABLED;
      
                            }
      
                            break;
      
                        case com.android.internal.R.styleable.View_hapticFeedbackEnabled:
      
                            if (!a.getBoolean(attr, true)) {
      
                                viewFlagValues &= ~HAPTIC_FEEDBACK_ENABLED;
      
                                viewFlagMasks |= HAPTIC_FEEDBACK_ENABLED;
      
                            }
      
                            break;
      
                        case R.styleable.View_scrollbars:
      
                            final int scrollbars = a.getInt(attr, SCROLLBARS_NONE);
      
                            if (scrollbars != SCROLLBARS_NONE) {
      
                                viewFlagValues |= scrollbars;
      
                                viewFlagMasks |= SCROLLBARS_MASK;
      
                                initializeScrollbars = true;
      
                            }
      
                            break;
      
                        //noinspection deprecation
      
                        case R.styleable.View_fadingEdge:
      
                            if (targetSdkVersion >= ICE_CREAM_SANDWICH) {
      
                                // Ignore the attribute starting with ICS
      
                                break;
      
                            }
      
                            // With builds < ICS, fall through and apply fading edges
      
                        case R.styleable.View_requiresFadingEdge:
      
                            final int fadingEdge = a.getInt(attr, FADING_EDGE_NONE);
      
                            if (fadingEdge != FADING_EDGE_NONE) {
      
                                viewFlagValues |= fadingEdge;
      
                                viewFlagMasks |= FADING_EDGE_MASK;
      
                                initializeFadingEdgeInternal(a);
      
                            }
      
                            break;
      
                        case R.styleable.View_scrollbarStyle:
      
                            scrollbarStyle = a.getInt(attr, SCROLLBARS_INSIDE_OVERLAY);
      
                            if (scrollbarStyle != SCROLLBARS_INSIDE_OVERLAY) {
      
                                viewFlagValues |= scrollbarStyle & SCROLLBARS_STYLE_MASK;
      
                                viewFlagMasks |= SCROLLBARS_STYLE_MASK;
      
                            }
      
                            break;
      
                        case R.styleable.View_isScrollContainer:
      
                            setScrollContainer = true;
      
                            if (a.getBoolean(attr, false)) {
      
                                setScrollContainer(true);
      
                            }
      
                            break;
      
                        case com.android.internal.R.styleable.View_keepScreenOn:
      
                            if (a.getBoolean(attr, false)) {
      
                                viewFlagValues |= KEEP_SCREEN_ON;
      
                                viewFlagMasks |= KEEP_SCREEN_ON;
      
                            }
      
                            break;
      
                        case R.styleable.View_filterTouchesWhenObscured:
      
                            if (a.getBoolean(attr, false)) {
      
                                viewFlagValues |= FILTER_TOUCHES_WHEN_OBSCURED;
      
                                viewFlagMasks |= FILTER_TOUCHES_WHEN_OBSCURED;
      
                            }
      
                            break;
      
                        case R.styleable.View_nextFocusLeft:
      
                            mNextFocusLeftId = a.getResourceId(attr, View.NO_ID);
      
                            break;
      
                        case R.styleable.View_nextFocusRight:
      
                            mNextFocusRightId = a.getResourceId(attr, View.NO_ID);
      
                            break;
      
                        case R.styleable.View_nextFocusUp:
      
                            mNextFocusUpId = a.getResourceId(attr, View.NO_ID);
      
                            break;
      
                        case R.styleable.View_nextFocusDown:
      
                            mNextFocusDownId = a.getResourceId(attr, View.NO_ID);
      
                            break;
      
                        case R.styleable.View_nextFocusForward:
      
                            mNextFocusForwardId = a.getResourceId(attr, View.NO_ID);
      
                            break;
      
                        case R.styleable.View_minWidth:
      
                            mMinWidth = a.getDimensionPixelSize(attr, 0);
      
                            break;
      
                        case R.styleable.View_minHeight:
      
                            mMinHeight = a.getDimensionPixelSize(attr, 0);
      
                            break;
      
                        case R.styleable.View_onClick:
      
                            if (context.isRestricted()) {
      
                                throw new IllegalStateException("The android:onClick attribute cannot "
      
                                        + "be used within a restricted context");
      
                            }
      
                            final String handlerName = a.getString(attr);
      
                            if (handlerName != null) {
      
                                setOnClickListener(new DeclaredOnClickListener(this, handlerName));
      
                            }
      
                            break;
      
                        case R.styleable.View_overScrollMode:
      
                            overScrollMode = a.getInt(attr, OVER_SCROLL_IF_CONTENT_SCROLLS);
      
                            break;
      
                        case R.styleable.View_verticalScrollbarPosition:
      
                            mVerticalScrollbarPosition = a.getInt(attr, SCROLLBAR_POSITION_DEFAULT);
      
                            break;
      
                        case R.styleable.View_layerType:
      
                            setLayerType(a.getInt(attr, LAYER_TYPE_NONE), null);
      
                            break;
      
                        case R.styleable.View_textDirection:
      
                            // Clear any text direction flag already set
      
                            mPrivateFlags2 &= ~PFLAG2_TEXT_DIRECTION_MASK;
      
                            // Set the text direction flags depending on the value of the attribute
      
                            final int textDirection = a.getInt(attr, -1);
      
                            if (textDirection != -1) {
      
                                mPrivateFlags2 |= PFLAG2_TEXT_DIRECTION_FLAGS[textDirection];
      
                            }
      
                            break;
      
                        case R.styleable.View_textAlignment:
      
                            // Clear any text alignment flag already set
      
                            mPrivateFlags2 &= ~PFLAG2_TEXT_ALIGNMENT_MASK;
      
                            // Set the text alignment flag depending on the value of the attribute
      
                            final int textAlignment = a.getInt(attr, TEXT_ALIGNMENT_DEFAULT);
      
                            mPrivateFlags2 |= PFLAG2_TEXT_ALIGNMENT_FLAGS[textAlignment];
      
                            break;
      
                        case R.styleable.View_importantForAccessibility:
      
                            setImportantForAccessibility(a.getInt(attr,
      
                                    IMPORTANT_FOR_ACCESSIBILITY_DEFAULT));
      
                            break;
      
                        case R.styleable.View_accessibilityLiveRegion:
      
                            setAccessibilityLiveRegion(a.getInt(attr, ACCESSIBILITY_LIVE_REGION_DEFAULT));
      
                            break;
      
                        case R.styleable.View_transitionName:
      
                            setTransitionName(a.getString(attr));
      
                            break;
      
                        case R.styleable.View_nestedScrollingEnabled:
      
                            setNestedScrollingEnabled(a.getBoolean(attr, false));
      
                            break;
      
                        case R.styleable.View_stateListAnimator:
      
                            setStateListAnimator(AnimatorInflater.loadStateListAnimator(context,
      
                                    a.getResourceId(attr, 0)));
      
                            break;
      
                        case R.styleable.View_backgroundTint:
      
                            // This will get applied later during setBackground().
      
                            if (mBackgroundTint == null) {
      
                                mBackgroundTint = new TintInfo();
      
                            }
      
                            mBackgroundTint.mTintList = a.getColorStateList(
      
                                    R.styleable.View_backgroundTint);
      
                            mBackgroundTint.mHasTintList = true;
      
                            break;
      
                        case R.styleable.View_backgroundTintMode:
      
                            // This will get applied later during setBackground().
      
                            if (mBackgroundTint == null) {
      
                                mBackgroundTint = new TintInfo();
      
                            }
      
                            mBackgroundTint.mTintMode = Drawable.parseTintMode(a.getInt(
      
                                    R.styleable.View_backgroundTintMode, -1), null);
      
                            mBackgroundTint.mHasTintMode = true;
      
                            break;
      
                        case R.styleable.View_outlineProvider:
      
                            setOutlineProviderFromAttribute(a.getInt(R.styleable.View_outlineProvider,
      
                                    PROVIDER_BACKGROUND));
      
                            break;
      
                        case R.styleable.View_foreground:
      
                            if (targetSdkVersion >= VERSION_CODES.M || this instanceof FrameLayout) {
      
                                setForeground(a.getDrawable(attr));
      
                            }
      
                            break;
      
                        case R.styleable.View_foregroundGravity:
      
                            if (targetSdkVersion >= VERSION_CODES.M || this instanceof FrameLayout) {
      
                                setForegroundGravity(a.getInt(attr, Gravity.NO_GRAVITY));
      
                            }
      
                            break;
      
                        case R.styleable.View_foregroundTintMode:
      
                            if (targetSdkVersion >= VERSION_CODES.M || this instanceof FrameLayout) {
      
                                setForegroundTintMode(Drawable.parseTintMode(a.getInt(attr, -1), null));
      
                            }
      
                            break;
      
                        case R.styleable.View_foregroundTint:
      
                            if (targetSdkVersion >= VERSION_CODES.M || this instanceof FrameLayout) {
      
                                setForegroundTintList(a.getColorStateList(attr));
      
                            }
      
                            break;
      
                        case R.styleable.View_foregroundInsidePadding:
      
                            if (targetSdkVersion >= VERSION_CODES.M || this instanceof FrameLayout) {
      
                                if (mForegroundInfo == null) {
      
                                    mForegroundInfo = new ForegroundInfo();
      
                                }
      
                                mForegroundInfo.mInsidePadding = a.getBoolean(attr,
      
                                        mForegroundInfo.mInsidePadding);
      
                            }
      
                            break;
      
                        case R.styleable.View_scrollIndicators:
      
                            final int scrollIndicators =
      
                                    (a.getInt(attr, 0) << SCROLL_INDICATORS_TO_PFLAGS3_LSHIFT)
      
                                            & SCROLL_INDICATORS_PFLAG3_MASK;
      
                            if (scrollIndicators != 0) {
      
                                mPrivateFlags3 |= scrollIndicators;
      
                                initializeScrollIndicators = true;
      
                            }
      
                            break;
      
                    }
      
                }
      
                setOverScrollMode(overScrollMode);
      
                // Cache start/end user padding as we cannot fully resolve padding here (we dont have yet
      
                // the resolved layout direction). Those cached values will be used later during padding
      
                // resolution.
      
                mUserPaddingStart = startPadding;
      
                mUserPaddingEnd = endPadding;
      
                if (background != null) {
      
                    setBackground(background);
      
                }
      
                // setBackground above will record that padding is currently provided by the background.
      
                // If we have padding specified via xml, record that here instead and use it.
      
                mLeftPaddingDefined = leftPaddingDefined;
      
                mRightPaddingDefined = rightPaddingDefined;
      
                if (padding >= 0) {
      
                    leftPadding = padding;
      
                    topPadding = padding;
      
                    rightPadding = padding;
      
                    bottomPadding = padding;
      
                    mUserPaddingLeftInitial = padding;
      
                    mUserPaddingRightInitial = padding;
      
                }
      
                if (isRtlCompatibilityMode()) {
      
                    // RTL compatibility mode: pre Jelly Bean MR1 case OR no RTL support case.
      
                    // left / right padding are used if defined (meaning here nothing to do). If they are not
      
                    // defined and start / end padding are defined (e.g. in Frameworks resources), then we use
      
                    // start / end and resolve them as left / right (layout direction is not taken into account).
      
                    // Padding from the background drawable is stored at this point in mUserPaddingLeftInitial
      
                    // and mUserPaddingRightInitial) so drawable padding will be used as ultimate default if
      
                    // defined.
      
                    if (!mLeftPaddingDefined && startPaddingDefined) {
      
                        leftPadding = startPadding;
      
                    }
      
                    mUserPaddingLeftInitial = (leftPadding >= 0) ? leftPadding : mUserPaddingLeftInitial;
      
                    if (!mRightPaddingDefined && endPaddingDefined) {
      
                        rightPadding = endPadding;
      
                    }
      
                    mUserPaddingRightInitial = (rightPadding >= 0) ? rightPadding : mUserPaddingRightInitial;
      
                } else {
      
                    // Jelly Bean MR1 and after case: if start/end defined, they will override any left/right
      
                    // values defined. Otherwise, left /right values are used.
      
                    // Padding from the background drawable is stored at this point in mUserPaddingLeftInitial
      
                    // and mUserPaddingRightInitial) so drawable padding will be used as ultimate default if
      
                    // defined.
      
                    final boolean hasRelativePadding = startPaddingDefined || endPaddingDefined;
      
                    if (mLeftPaddingDefined && !hasRelativePadding) {
      
                        mUserPaddingLeftInitial = leftPadding;
      
                    }
      
                    if (mRightPaddingDefined && !hasRelativePadding) {
      
                        mUserPaddingRightInitial = rightPadding;
      
                    }
      
                }
      
                internalSetPadding(
      
                        mUserPaddingLeftInitial,
      
                        topPadding >= 0 ? topPadding : mPaddingTop,
      
                        mUserPaddingRightInitial,
      
                        bottomPadding >= 0 ? bottomPadding : mPaddingBottom);
      
                if (viewFlagMasks != 0) {
      
                    setFlags(viewFlagValues, viewFlagMasks);
      
                }
      
                if (initializeScrollbars) {
      
                    initializeScrollbarsInternal(a);
      
                }
      
                if (initializeScrollIndicators) {
      
                    initializeScrollIndicatorsInternal();
      
                }
      
                a.recycle();
      
                // Needs to be called after mViewFlags is set
      
                if (scrollbarStyle != SCROLLBARS_INSIDE_OVERLAY) {
      
                    recomputePadding();
      
                }
      
                if (x != 0 || y != 0) {
      
                    scrollTo(x, y);
      
                }
      
                if (transformSet) {
      
                    setTranslationX(tx);
      
                    setTranslationY(ty);
      
                    setTranslationZ(tz);
      
                    setElevation(elevation);
      
                    setRotation(rotation);
      
                    setRotationX(rotationX);
      
                    setRotationY(rotationY);
      
                    setScaleX(sx);
      
                    setScaleY(sy);
      
                }
      
                if (!setScrollContainer && (viewFlagValues&SCROLLBARS_VERTICAL) != 0) {
      
                    setScrollContainer(true);
      
                }
      
                computeOpaqueFlags();
      
            }
      
            /**
      
             * An implementation of OnClickListener that attempts to lazily load a
      
             * named click handling method from a parent or ancestor context.
      
             */
      
            private static class DeclaredOnClickListener implements OnClickListener {
      
                private final View mHostView;
      
                private final String mMethodName;
      
                private Method mMethod;
      
                public DeclaredOnClickListener(@NonNull View hostView, @NonNull String methodName) {
      
                    mHostView = hostView;
      
                    mMethodName = methodName;
      
                }
      
                @Override
      
                public void onClick(@NonNull View v) {
      
                    if (mMethod == null) {
      
                        mMethod = resolveMethod(mHostView.getContext(), mMethodName);
      
                    }
      
                    try {
      
                        mMethod.invoke(mHostView.getContext(), v);
      
                    } catch (IllegalAccessException e) {
      
                        throw new IllegalStateException(
      
                                "Could not execute non-public method for android:onClick", e);
      
                    } catch (InvocationTargetException e) {
      
                        throw new IllegalStateException(
      
                                "Could not execute method for android:onClick", e);
      
                    }
      
                }
      
                @NonNull
      
                private Method resolveMethod(@Nullable Context context, @NonNull String name) {
      
                    while (context != null) {
      
                        try {
      
                            if (!context.isRestricted()) {
      
                                return context.getClass().getMethod(mMethodName, View.class);
      
                            }
      
                        } catch (NoSuchMethodException e) {
      
                            // Failed to find method, keep searching up the hierarchy.
      
                        }
      
                        if (context instanceof ContextWrapper) {
      
                            context = ((ContextWrapper) context).getBaseContext();
      
                        } else {
      
                            // Can't search up the hierarchy, null out and fail.
      
                            context = null;
      
                        }
      
                    }
      
                    final int id = mHostView.getId();
      
                    final String idText = id == NO_ID ? "" : " with id '"
      
                            + mHostView.getContext().getResources().getResourceEntryName(id) + "'";
      
                    throw new IllegalStateException("Could not find method " + mMethodName
      
                            + "(View) in a parent or ancestor Context for android:onClick "
      
                            + "attribute defined on view " + mHostView.getClass() + idText);
      
                }
      
            }
      
            /**
      
             * Non-public constructor for use in testing
      
             */
      
            View() {
      
                mResources = null;
      
                mRenderNode = RenderNode.create(getClass().getName(), this);
      
            }
      
            private static SparseArray<String> getAttributeMap() {
      
                if (mAttributeMap == null) {
      
                    mAttributeMap = new SparseArray<>();
      
                }
      
                return mAttributeMap;
      
            }
      
            private void saveAttributeData(@Nullable AttributeSet attrs, @NonNull TypedArray t) {
      
                final int attrsCount = attrs == null ? 0 : attrs.getAttributeCount();
      
                final int indexCount = t.getIndexCount();
      
                final String[] attributes = new String[(attrsCount + indexCount) * 2];
      
                int i = 0;
      
                // Store raw XML attributes.
      
                for (int j = 0; j < attrsCount; ++j) {
      
                    attributes[i] = attrs.getAttributeName(j);
      
                    attributes[i + 1] = attrs.getAttributeValue(j);
      
                    i += 2;
      
                }
      
                // Store resolved styleable attributes.
      
                final Resources res = t.getResources();
      
                final SparseArray<String> attributeMap = getAttributeMap();
      
                for (int j = 0; j < indexCount; ++j) {
      
                    final int index = t.getIndex(j);
      
                    if (!t.hasValueOrEmpty(index)) {
      
                        // Value is undefined. Skip it.
      
                        continue;
      
                    }
      
                    final int resourceId = t.getResourceId(index, 0);
      
                    if (resourceId == 0) {
      
                        // Value is not a reference. Skip it.
      
                        continue;
      
                    }
      
                    String resourceName = attributeMap.get(resourceId);
      
                    if (resourceName == null) {
      
                        try {
      
                            resourceName = res.getResourceName(resourceId);
      
                        } catch (Resources.NotFoundException e) {
      
                            resourceName = "0x" + Integer.toHexString(resourceId);
      
                        }
      
                        attributeMap.put(resourceId, resourceName);
      
                    }
      
                    attributes[i] = resourceName;
      
                    attributes[i + 1] = t.getString(index);
      
                    i += 2;
      
                }
      
                // Trim to fit contents.
      
                final String[] trimmed = new String[i];
      
                System.arraycopy(attributes, 0, trimmed, 0, i);
      
                mAttributes = trimmed;
      
            }
      
            public String toString() {
      
                StringBuilder out = new StringBuilder(128);
      
                out.append(getClass().getName());
      
                out.append('{');
      
                out.append(Integer.toHexString(System.identityHashCode(this)));
      
                out.append(' ');
      
                switch (mViewFlags&VISIBILITY_MASK) {
      
                    case VISIBLE: out.append('V'); break;
      
                    case INVISIBLE: out.append('I'); break;
      
                    case GONE: out.append('G'); break;
      
                    default: out.append('.'); break;
      
                }
      
                out.append((mViewFlags&FOCUSABLE_MASK) == FOCUSABLE ? 'F' : '.');
      
                out.append((mViewFlags&ENABLED_MASK) == ENABLED ? 'E' : '.');
      
                out.append((mViewFlags&DRAW_MASK) == WILL_NOT_DRAW ? '.' : 'D');
      
                out.append((mViewFlags&SCROLLBARS_HORIZONTAL) != 0 ? 'H' : '.');
      
                out.append((mViewFlags&SCROLLBARS_VERTICAL) != 0 ? 'V' : '.');
      
                out.append((mViewFlags&CLICKABLE) != 0 ? 'C' : '.');
      
                out.append((mViewFlags&LONG_CLICKABLE) != 0 ? 'L' : '.');
      
                out.append((mViewFlags&CONTEXT_CLICKABLE) != 0 ? 'X' : '.');
      
                out.append(' ');
      
                out.append((mPrivateFlags&PFLAG_IS_ROOT_NAMESPACE) != 0 ? 'R' : '.');
      
                out.append((mPrivateFlags&PFLAG_FOCUSED) != 0 ? 'F' : '.');
      
                out.append((mPrivateFlags&PFLAG_SELECTED) != 0 ? 'S' : '.');
      
                if ((mPrivateFlags&PFLAG_PREPRESSED) != 0) {
      
                    out.append('p');
      
                } else {
      
                    out.append((mPrivateFlags&PFLAG_PRESSED) != 0 ? 'P' : '.');
      
                }
      
                out.append((mPrivateFlags&PFLAG_HOVERED) != 0 ? 'H' : '.');
      
                out.append((mPrivateFlags&PFLAG_ACTIVATED) != 0 ? 'A' : '.');
      
                out.append((mPrivateFlags&PFLAG_INVALIDATED) != 0 ? 'I' : '.');
      
                out.append((mPrivateFlags&PFLAG_DIRTY_MASK) != 0 ? 'D' : '.');
      
                out.append(' ');
      
                out.append(mLeft);
      
                out.append(',');
      
                out.append(mTop);
      
                out.append('-');
      
                out.append(mRight);
      
                out.append(',');
      
                out.append(mBottom);
      
                final int id = getId();
      
                if (id != NO_ID) {
      
                    out.append(" #");
      
                    out.append(Integer.toHexString(id));
      
                    final Resources r = mResources;
      
                    if (id > 0 && Resources.resourceHasPackage(id) && r != null) {
      
                        try {
      
                            String pkgname;
      
                            switch (id&0xff000000) {
      
                                case 0x7f000000:
      
                                    pkgname="app";
      
                                    break;
      
                                case 0x01000000:
      
                                    pkgname="android";
      
                                    break;
      
                                default:
      
                                    pkgname = r.getResourcePackageName(id);
      
                                    break;
      
                            }
      
                            String typename = r.getResourceTypeName(id);
      
                            String entryname = r.getResourceEntryName(id);
      
                            out.append(" ");
      
                            out.append(pkgname);
      
                            out.append(":");
      
                            out.append(typename);
      
                            out.append("/");
      
                            out.append(entryname);
      
                        } catch (Resources.NotFoundException e) {
      
                        }
      
                    }
      
                }
      
                out.append("}");
      
                return out.toString();
      
            }
      
            /**
      
             * <p>
      
             * Initializes the fading edges from a given set of styled attributes. This
      
             * method should be called by subclasses that need fading edges and when an
      
             * instance of these subclasses is created programmatically rather than
      
             * being inflated from XML. This method is automatically called when the XML
      
             * is inflated.
      
             * </p>
      
             *
      
             * @param a the styled attributes set to initialize the fading edges from
      
             *
      
             * @removed
      
             */
      
            protected void initializeFadingEdge(TypedArray a) {
      
                // This method probably shouldn't have been included in the SDK to begin with.
      
                // It relies on 'a' having been initialized using an attribute filter array that is
      
                // not publicly available to the SDK. The old method has been renamed
      
                // to initializeFadingEdgeInternal and hidden for framework use only;
      
                // this one initializes using defaults to make it safe to call for apps.
      
                TypedArray arr = mContext.obtainStyledAttributes(com.android.internal.R.styleable.View);
      
                initializeFadingEdgeInternal(arr);
      
                arr.recycle();
      
            }
      
            /**
      
             * <p>
      
             * Initializes the fading edges from a given set of styled attributes. This
      
             * method should be called by subclasses that need fading edges and when an
      
             * instance of these subclasses is created programmatically rather than
      
             * being inflated from XML. This method is automatically called when the XML
      
             * is inflated.
      
             * </p>
      
             *
      
             * @param a the styled attributes set to initialize the fading edges from
      
             * @hide This is the real method; the public one is shimmed to be safe to call from apps.
      
             */
      
            protected void initializeFadingEdgeInternal(TypedArray a) {
      
                initScrollCache();
      
                mScrollCache.fadingEdgeLength = a.getDimensionPixelSize(
      
                        R.styleable.View_fadingEdgeLength,
      
                        ViewConfiguration.get(mContext).getScaledFadingEdgeLength());
      
            }
      
            /**
      
             * Returns the size of the vertical faded edges used to indicate that more
      
             * content in this view is visible.
      
             *
      
             * @return The size in pixels of the vertical faded edge or 0 if vertical
      
             *         faded edges are not enabled for this view.
      
             * @attr ref android.R.styleable#View_fadingEdgeLength
      
             */
      
            public int getVerticalFadingEdgeLength() {
      
                if (isVerticalFadingEdgeEnabled()) {
      
                    ScrollabilityCache cache = mScrollCache;
      
                    if (cache != null) {
      
                        return cache.fadingEdgeLength;
      
                    }
      
                }
      
                return 0;
      
            }
      
            /**
      
             * Set the size of the faded edge used to indicate that more content in this
      
             * view is available.  Will not change whether the fading edge is enabled; use
      
             * {@link #setVerticalFadingEdgeEnabled(boolean)} or
      
             * {@link #setHorizontalFadingEdgeEnabled(boolean)} to enable the fading edge
      
             * for the vertical or horizontal fading edges.
      
             *
      
             * @param length The size in pixels of the faded edge used to indicate that more
      
             *        content in this view is visible.
      
             */
      
            public void setFadingEdgeLength(int length) {
      
                initScrollCache();
      
                mScrollCache.fadingEdgeLength = length;
      
            }
      
            /**
      
             * Returns the size of the horizontal faded edges used to indicate that more
      
             * content in this view is visible.
      
             *
      
             * @return The size in pixels of the horizontal faded edge or 0 if horizontal
      
             *         faded edges are not enabled for this view.
      
             * @attr ref android.R.styleable#View_fadingEdgeLength
      
             */
      
            public int getHorizontalFadingEdgeLength() {
      
                if (isHorizontalFadingEdgeEnabled()) {
      
                    ScrollabilityCache cache = mScrollCache;
      
                    if (cache != null) {
      
                        return cache.fadingEdgeLength;
      
                    }
      
                }
      
                return 0;
      
            }
      
            /**
      
             * Returns the width of the vertical scrollbar.
      
             *
      
             * @return The width in pixels of the vertical scrollbar or 0 if there
      
             *         is no vertical scrollbar.
      
             */
      
            public int getVerticalScrollbarWidth() {
      
                ScrollabilityCache cache = mScrollCache;
      
                if (cache != null) {
      
                    ScrollBarDrawable scrollBar = cache.scrollBar;
      
                    if (scrollBar != null) {
      
                        int size = scrollBar.getSize(true);
      
                        if (size <= 0) {
      
                            size = cache.scrollBarSize;
      
                        }
      
                        return size;
      
                    }
      
                    return 0;
      
                }
      
                return 0;
      
            }
      
            /**
      
             * Returns the height of the horizontal scrollbar.
      
             *
      
             * @return The height in pixels of the horizontal scrollbar or 0 if
      
             *         there is no horizontal scrollbar.
      
             */
      
            protected int getHorizontalScrollbarHeight() {
      
                ScrollabilityCache cache = mScrollCache;
      
                if (cache != null) {
      
                    ScrollBarDrawable scrollBar = cache.scrollBar;
      
                    if (scrollBar != null) {
      
                        int size = scrollBar.getSize(false);
      
                        if (size <= 0) {
      
                            size = cache.scrollBarSize;
      
                        }
      
                        return size;
      
                    }
      
                    return 0;
      
                }
      
                return 0;
      
            }
      
            /**
      
             * <p>
      
             * Initializes the scrollbars from a given set of styled attributes. This
      
             * method should be called by subclasses that need scrollbars and when an
      
             * instance of these subclasses is created programmatically rather than
      
             * being inflated from XML. This method is automatically called when the XML
      
             * is inflated.
      
             * </p>
      
             *
      
             * @param a the styled attributes set to initialize the scrollbars from
      
             *
      
             * @removed
      
             */
      
            protected void initializeScrollbars(TypedArray a) {
      
                // It's not safe to use this method from apps. The parameter 'a' must have been obtained
      
                // using the View filter array which is not available to the SDK. As such, internal
      
                // framework usage now uses initializeScrollbarsInternal and we grab a default
      
                // TypedArray with the right filter instead here.
      
                TypedArray arr = mContext.obtainStyledAttributes(com.android.internal.R.styleable.View);
      
                initializeScrollbarsInternal(arr);
      
                // We ignored the method parameter. Recycle the one we actually did use.
      
                arr.recycle();
      
            }
      
            /**
      
             * <p>
      
             * Initializes the scrollbars from a given set of styled attributes. This
      
             * method should be called by subclasses that need scrollbars and when an
      
             * instance of these subclasses is created programmatically rather than
      
             * being inflated from XML. This method is automatically called when the XML
      
             * is inflated.
      
             * </p>
      
             *
      
             * @param a the styled attributes set to initialize the scrollbars from
      
             * @hide
      
             */
      
            protected void initializeScrollbarsInternal(TypedArray a) {
      
                initScrollCache();
      
                final ScrollabilityCache scrollabilityCache = mScrollCache;
      
                if (scrollabilityCache.scrollBar == null) {
      
                    scrollabilityCache.scrollBar = new ScrollBarDrawable();
      
                    scrollabilityCache.scrollBar.setCallback(this);
      
                    scrollabilityCache.scrollBar.setState(getDrawableState());
      
                }
      
                final boolean fadeScrollbars = a.getBoolean(R.styleable.View_fadeScrollbars, true);
      
                if (!fadeScrollbars) {
      
                    scrollabilityCache.state = ScrollabilityCache.ON;
      
                }
      
                scrollabilityCache.fadeScrollBars = fadeScrollbars;
      
                scrollabilityCache.scrollBarFadeDuration = a.getInt(
      
                        R.styleable.View_scrollbarFadeDuration, ViewConfiguration
      
                                .getScrollBarFadeDuration());
      
                scrollabilityCache.scrollBarDefaultDelayBeforeFade = a.getInt(
      
                        R.styleable.View_scrollbarDefaultDelayBeforeFade,
      
                        ViewConfiguration.getScrollDefaultDelay());
      
                scrollabilityCache.scrollBarSize = a.getDimensionPixelSize(
      
                        com.android.internal.R.styleable.View_scrollbarSize,
      
                        ViewConfiguration.get(mContext).getScaledScrollBarSize());
      
                Drawable track = a.getDrawable(R.styleable.View_scrollbarTrackHorizontal);
      
                scrollabilityCache.scrollBar.setHorizontalTrackDrawable(track);
      
                Drawable thumb = a.getDrawable(R.styleable.View_scrollbarThumbHorizontal);
      
                if (thumb != null) {
      
                    scrollabilityCache.scrollBar.setHorizontalThumbDrawable(thumb);
      
                }
      
                boolean alwaysDraw = a.getBoolean(R.styleable.View_scrollbarAlwaysDrawHorizontalTrack,
      
                        false);
      
                if (alwaysDraw) {
      
                    scrollabilityCache.scrollBar.setAlwaysDrawHorizontalTrack(true);
      
                }
      
                track = a.getDrawable(R.styleable.View_scrollbarTrackVertical);
      
                scrollabilityCache.scrollBar.setVerticalTrackDrawable(track);
      
                thumb = a.getDrawable(R.styleable.View_scrollbarThumbVertical);
      
                if (thumb != null) {
      
                    scrollabilityCache.scrollBar.setVerticalThumbDrawable(thumb);
      
                }
      
                alwaysDraw = a.getBoolean(R.styleable.View_scrollbarAlwaysDrawVerticalTrack,
      
                        false);
      
                if (alwaysDraw) {
      
                    scrollabilityCache.scrollBar.setAlwaysDrawVerticalTrack(true);
      
                }
      
                // Apply layout direction to the new Drawables if needed
      
                final int layoutDirection = getLayoutDirection();
      
                if (track != null) {
      
                    track.setLayoutDirection(layoutDirection);
      
                }
      
                if (thumb != null) {
      
                    thumb.setLayoutDirection(layoutDirection);
      
                }
      
                // Re-apply user/background padding so that scrollbar(s) get added
      
                resolvePadding();
      
            }
      
            private void initializeScrollIndicatorsInternal() {
      
                // Some day maybe we'll break this into top/left/start/etc. and let the
      
                // client control it. Until then, you can have any scroll indicator you
      
                // want as long as it's a 1dp foreground-colored rectangle.
      
                if (mScrollIndicatorDrawable == null) {
      
                    mScrollIndicatorDrawable = mContext.getDrawable(R.drawable.scroll_indicator_material);
      
                }
      
            }
      
            /**
      
             * <p>
      
             * Initalizes the scrollability cache if necessary.
      
             * </p>
      
             */
      
            private void initScrollCache() {
      
                if (mScrollCache == null) {
      
                    mScrollCache = new ScrollabilityCache(ViewConfiguration.get(mContext), this);
      
                }
      
            }
      
            private ScrollabilityCache getScrollCache() {
      
                initScrollCache();
      
                return mScrollCache;
      
            }
      
            /**
      
             * Set the position of the vertical scroll bar. Should be one of
      
             * {@link #SCROLLBAR_POSITION_DEFAULT}, {@link #SCROLLBAR_POSITION_LEFT} or
      
             * {@link #SCROLLBAR_POSITION_RIGHT}.
      
             *
      
             * @param position Where the vertical scroll bar should be positioned.
      
             */
      
            public void setVerticalScrollbarPosition(int position) {
      
                if (mVerticalScrollbarPosition != position) {
      
                    mVerticalScrollbarPosition = position;
      
                    computeOpaqueFlags();
      
                    resolvePadding();
      
                }
      
            }
      
            /**
      
             * @return The position where the vertical scroll bar will show, if applicable.
      
             * @see #setVerticalScrollbarPosition(int)
      
             */
      
            public int getVerticalScrollbarPosition() {
      
                return mVerticalScrollbarPosition;
      
            }
      
            /**
      
             * Sets the state of all scroll indicators.
      
             * <p>
      
             * See {@link #setScrollIndicators(int, int)} for usage information.
      
             *
      
             * @param indicators a bitmask of indicators that should be enabled, or
      
             *                   {@code 0} to disable all indicators
      
             * @see #setScrollIndicators(int, int)
      
             * @see #getScrollIndicators()
      
             * @attr ref android.R.styleable#View_scrollIndicators
      
             */
      
            public void setScrollIndicators(@ScrollIndicators int indicators) {
      
                setScrollIndicators(indicators,
      
                        SCROLL_INDICATORS_PFLAG3_MASK >>> SCROLL_INDICATORS_TO_PFLAGS3_LSHIFT);
      
            }
      
            /**
      
             * Sets the state of the scroll indicators specified by the mask. To change
      
             * all scroll indicators at once, see {@link #setScrollIndicators(int)}.
      
             * <p>
      
             * When a scroll indicator is enabled, it will be displayed if the view
      
             * can scroll in the direction of the indicator.
      
             * <p>
      
             * Multiple indicator types may be enabled or disabled by passing the
      
             * logical OR of the desired types. If multiple types are specified, they
      
             * will all be set to the same enabled state.
      
             * <p>
      
             * For example, to enable the top scroll indicatorExample: {@code setScrollIndicators
      
             *
      
             * @param indicators the indicator direction, or the logical OR of multiple
      
             *             indicator directions. One or more of:
      
             *             <ul>
      
             *               <li>{@link #SCROLL_INDICATOR_TOP}</li>
      
             *               <li>{@link #SCROLL_INDICATOR_BOTTOM}</li>
      
             *               <li>{@link #SCROLL_INDICATOR_LEFT}</li>
      
             *               <li>{@link #SCROLL_INDICATOR_RIGHT}</li>
      
             *               <li>{@link #SCROLL_INDICATOR_START}</li>
      
             *               <li>{@link #SCROLL_INDICATOR_END}</li>
      
             *             </ul>
      
             * @see #setScrollIndicators(int)
      
             * @see #getScrollIndicators()
      
             * @attr ref android.R.styleable#View_scrollIndicators
      
             */
      
            public void setScrollIndicators(@ScrollIndicators int indicators, @ScrollIndicators int mask) {
      
                // Shift and sanitize mask.
      
                mask <<= SCROLL_INDICATORS_TO_PFLAGS3_LSHIFT;
      
                mask &= SCROLL_INDICATORS_PFLAG3_MASK;
      
                // Shift and mask indicators.
      
                indicators <<= SCROLL_INDICATORS_TO_PFLAGS3_LSHIFT;
      
                indicators &= mask;
      
                // Merge with non-masked flags.
      
                final int updatedFlags = indicators | (mPrivateFlags3 & ~mask);
      
                if (mPrivateFlags3 != updatedFlags) {
      
                    mPrivateFlags3 = updatedFlags;
      
                    if (indicators != 0) {
      
                        initializeScrollIndicatorsInternal();
      
                    }
      
                    invalidate();
      
                }
      
            }
      
            /**
      
             * Returns a bitmask representing the enabled scroll indicators.
      
             * <p>
      
             * For example, if the top and left scroll indicators are enabled and all
      
             * other indicators are disabled, the return value will be
      
             * {@code View.SCROLL_INDICATOR_TOP | View.SCROLL_INDICATOR_LEFT}.
      
             * <p>
      
             * To check whether the bottom scroll indicator is enabled, use the value
      
             * of {@code (getScrollIndicators() & View.SCROLL_INDICATOR_BOTTOM) != 0}.
      
             *
      
             * @return a bitmask representing the enabled scroll indicators
      
             */
      
            @ScrollIndicators
      
            public int getScrollIndicators() {
      
                return (mPrivateFlags3 & SCROLL_INDICATORS_PFLAG3_MASK)
      
                        >>> SCROLL_INDICATORS_TO_PFLAGS3_LSHIFT;
      
            }
      
            ListenerInfo getListenerInfo() {
      
                if (mListenerInfo != null) {
      
                    return mListenerInfo;
      
                }
      
                mListenerInfo = new ListenerInfo();
      
                return mListenerInfo;
      
            }
      
            /**
      
             * Register a callback to be invoked when the scroll X or Y positions of
      
             * this view change.
      
             * <p>
      
             * <b>Note:</b> Some views handle scrolling independently from View and may
      
             * have their own separate listeners for scroll-type events. For example,
      
             * {@link android.widget.ListView ListView} allows clients to register an
      
             * {@link android.widget.ListView#setOnScrollListener(android.widget.AbsListView.OnScrollListener) AbsListView.OnScrollListener}
      
             * to listen for changes in list scroll position.
      
             *
      
             * @param l The listener to notify when the scroll X or Y position changes.
      
             * @see android.view.View#getScrollX()
      
             * @see android.view.View#getScrollY()
      
             */
      
            public void setOnScrollChangeListener(OnScrollChangeListener l) {
      
                getListenerInfo().mOnScrollChangeListener = l;
      
            }
      
            /**
      
             * Register a callback to be invoked when focus of this view changed.
      
             *
      
             * @param l The callback that will run.
      
             */
      
            public void setOnFocusChangeListener(OnFocusChangeListener l) {
      
                getListenerInfo().mOnFocusChangeListener = l;
      
            }
      
            /**
      
             * Add a listener that will be called when the bounds of the view change due to
      
             * layout processing.
      
             *
      
             * @param listener The listener that will be called when layout bounds change.
      
             */
      
            public void addOnLayoutChangeListener(OnLayoutChangeListener listener) {
      
                ListenerInfo li = getListenerInfo();
      
                if (li.mOnLayoutChangeListeners == null) {
      
                    li.mOnLayoutChangeListeners = new ArrayList<OnLayoutChangeListener>();
      
                }
      
                if (!li.mOnLayoutChangeListeners.contains(listener)) {
      
                    li.mOnLayoutChangeListeners.add(listener);
      
                }
      
            }
      
            /**
      
             * Remove a listener for layout changes.
      
             *
      
             * @param listener The listener for layout bounds change.
      
             */
      
            public void removeOnLayoutChangeListener(OnLayoutChangeListener listener) {
      
                ListenerInfo li = mListenerInfo;
      
                if (li == null || li.mOnLayoutChangeListeners == null) {
      
                    return;
      
                }
      
                li.mOnLayoutChangeListeners.remove(listener);
      
            }
      
            /**
      
             * Add a listener for attach state changes.
      
             *
      
             * This listener will be called whenever this view is attached or detached
      
             * from a window. Remove the listener using
      
             * {@link #removeOnAttachStateChangeListener(OnAttachStateChangeListener)}.
      
             *
      
             * @param listener Listener to attach
      
             * @see #removeOnAttachStateChangeListener(OnAttachStateChangeListener)
      
             */
      
            public void addOnAttachStateChangeListener(OnAttachStateChangeListener listener) {
      
                ListenerInfo li = getListenerInfo();
      
                if (li.mOnAttachStateChangeListeners == null) {
      
                    li.mOnAttachStateChangeListeners
      
                            = new CopyOnWriteArrayList<OnAttachStateChangeListener>();
      
                }
      
                li.mOnAttachStateChangeListeners.add(listener);
      
            }
      
            /**
      
             * Remove a listener for attach state changes. The listener will receive no further
      
             * notification of window attach/detach events.
      
             *
      
             * @param listener Listener to remove
      
             * @see #addOnAttachStateChangeListener(OnAttachStateChangeListener)
      
             */
      
            public void removeOnAttachStateChangeListener(OnAttachStateChangeListener listener) {
      
                ListenerInfo li = mListenerInfo;
      
                if (li == null || li.mOnAttachStateChangeListeners == null) {
      
                    return;
      
                }
      
                li.mOnAttachStateChangeListeners.remove(listener);
      
            }
      
            /**
      
             * Returns the focus-change callback registered for this view.
      
             *
      
             * @return The callback, or null if one is not registered.
      
             */
      
            public OnFocusChangeListener getOnFocusChangeListener() {
      
                ListenerInfo li = mListenerInfo;
      
                return li != null ? li.mOnFocusChangeListener : null;
      
            }
      
            /**
      
             * Register a callback to be invoked when this view is clicked. If this view is not
      
             * clickable, it becomes clickable.
      
             *
      
             * @param l The callback that will run
      
             *
      
             * @see #setClickable(boolean)
      
             */
      
            public void setOnClickListener(@Nullable OnClickListener l) {
      
                if (!isClickable()) {
      
                    setClickable(true);
      
                }
      
                getListenerInfo().mOnClickListener = l;
      
            }
      
            /**
      
             * Return whether this view has an attached OnClickListener.  Returns
      
             * true if there is a listener, false if there is none.
      
             */
      
            public boolean hasOnClickListeners() {
      
                ListenerInfo li = mListenerInfo;
      
                return (li != null && li.mOnClickListener != null);
      
            }
      
            /**
      
             * Register a callback to be invoked when this view is clicked and held. If this view is not
      
             * long clickable, it becomes long clickable.
      
             *
      
             * @param l The callback that will run
      
             *
      
             * @see #setLongClickable(boolean)
      
             */
      
            public void setOnLongClickListener(@Nullable OnLongClickListener l) {
      
                if (!isLongClickable()) {
      
                    setLongClickable(true);
      
                }
      
                getListenerInfo().mOnLongClickListener = l;
      
            }
      
            /**
      
             * Register a callback to be invoked when this view is context clicked. If the view is not
      
             * context clickable, it becomes context clickable.
      
             *
      
             * @param l The callback that will run
      
             * @see #setContextClickable(boolean)
      
             */
      
            public void setOnContextClickListener(@Nullable OnContextClickListener l) {
      
                if (!isContextClickable()) {
      
                    setContextClickable(true);
      
                }
      
                getListenerInfo().mOnContextClickListener = l;
      
            }
      
            /**
      
             * Register a callback to be invoked when the context menu for this view is
      
             * being built. If this view is not long clickable, it becomes long clickable.
      
             *
      
             * @param l The callback that will run
      
             *
      
             */
      
            public void setOnCreateContextMenuListener(OnCreateContextMenuListener l) {
      
                if (!isLongClickable()) {
      
                    setLongClickable(true);
      
                }
      
                getListenerInfo().mOnCreateContextMenuListener = l;
      
            }
      
            /**
      
             * Call this view's OnClickListener, if it is defined.  Performs all normal
      
             * actions associated with clicking: reporting accessibility event, playing
      
             * a sound, etc.
      
             *
      
             * @return True there was an assigned OnClickListener that was called, false
      
             *         otherwise is returned.
      
             */
      
            public boolean performClick() {
      
                final boolean result;
      
                final ListenerInfo li = mListenerInfo;
      
                if (li != null && li.mOnClickListener != null) {
      
                    playSoundEffect(SoundEffectConstants.CLICK);
      
                    li.mOnClickListener.onClick(this);
      
                    result = true;
      
                } else {
      
                    result = false;
      
                }
      
                sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_CLICKED);
      
                return result;
      
            }
      
            /**
      
             * Directly call any attached OnClickListener.  Unlike {@link #performClick()},
      
             * this only calls the listener, and does not do any associated clicking
      
             * actions like reporting an accessibility event.
      
             *
      
             * @return True there was an assigned OnClickListener that was called, false
      
             *         otherwise is returned.
      
             */
      
            public boolean callOnClick() {
      
                ListenerInfo li = mListenerInfo;
      
                if (li != null && li.mOnClickListener != null) {
      
                    li.mOnClickListener.onClick(this);
      
                    return true;
      
                }
      
                return false;
      
            }
      
            /**
      
             * Call this view's OnLongClickListener, if it is defined. Invokes the context menu if the
      
             * OnLongClickListener did not consume the event.
      
             *
      
             * @return True if one of the above receivers consumed the event, false otherwise.
      
             */
      
            public boolean performLongClick() {
      
                sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_LONG_CLICKED);
      
                boolean handled = false;
      
                ListenerInfo li = mListenerInfo;
      
                if (li != null && li.mOnLongClickListener != null) {
      
                    handled = li.mOnLongClickListener.onLongClick(View.this);
      
                }
      
                if (!handled) {
      
                    handled = showContextMenu();
      
                }
      
                if (handled) {
      
                    performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
      
                }
      
                return handled;
      
            }
      
            /**
      
             * Call this view's OnContextClickListener, if it is defined.
      
             *
      
             * @return True if there was an assigned OnContextClickListener that consumed the event, false
      
             *         otherwise.
      
             */
      
            public boolean performContextClick() {
      
                sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_CONTEXT_CLICKED);
      
                boolean handled = false;
      
                ListenerInfo li = mListenerInfo;
      
                if (li != null && li.mOnContextClickListener != null) {
      
                    handled = li.mOnContextClickListener.onContextClick(View.this);
      
                }
      
                if (handled) {
      
                    performHapticFeedback(HapticFeedbackConstants.CONTEXT_CLICK);
      
                }
      
                return handled;
      
            }
      
            /**
      
             * Performs button-related actions during a touch down event.
      
             *
      
             * @param event The event.
      
             * @return True if the down was consumed.
      
             *
      
             * @hide
      
             */
      
            protected boolean performButtonActionOnTouchDown(MotionEvent event) {
      
                if (event.getToolType(0) == MotionEvent.TOOL_TYPE_MOUSE &&
      
                    (event.getButtonState() & MotionEvent.BUTTON_SECONDARY) != 0) {
      
                    showContextMenu(event.getX(), event.getY(), event.getMetaState());
      
                    mPrivateFlags |= PFLAG_CANCEL_NEXT_UP_EVENT;
      
                    return true;
      
                }
      
                return false;
      
            }
      
            /**
      
             * Bring up the context menu for this view.
      
             *
      
             * @return Whether a context menu was displayed.
      
             */
      
            public boolean showContextMenu() {
      
                return getParent().showContextMenuForChild(this);
      
            }
      
            /**
      
             * Bring up the context menu for this view, referring to the item under the specified point.
      
             *
      
             * @param x The referenced x coordinate.
      
             * @param y The referenced y coordinate.
      
             * @param metaState The keyboard modifiers that were pressed.
      
             * @return Whether a context menu was displayed.
      
             *
      
             * @hide
      
             */
      
            public boolean showContextMenu(float x, float y, int metaState) {
      
                return showContextMenu();
      
            }
      
            /**
      
             * Start an action mode with the default type {@link ActionMode#TYPE_PRIMARY}.
      
             *
      
             * @param callback Callback that will control the lifecycle of the action mode
      
             * @return The new action mode if it is started, null otherwise
      
             *
      
             * @see ActionMode
      
             * @see #startActionMode(android.view.ActionMode.Callback, int)
      
             */
      
            public ActionMode startActionMode(ActionMode.Callback callback) {
      
                return startActionMode(callback, ActionMode.TYPE_PRIMARY);
      
            }
      
            /**
      
             * Start an action mode with the given type.
      
             *
      
             * @param callback Callback that will control the lifecycle of the action mode
      
             * @param type One of {@link ActionMode#TYPE_PRIMARY} or {@link ActionMode#TYPE_FLOATING}.
      
             * @return The new action mode if it is started, null otherwise
      
             *
      
             * @see ActionMode
      
             */
      
            public ActionMode startActionMode(ActionMode.Callback callback, int type) {
      
                ViewParent parent = getParent();
      
                if (parent == null) return null;
      
                try {
      
                    return parent.startActionModeForChild(this, callback, type);
      
                } catch (AbstractMethodError ame) {
      
                    // Older implementations of custom views might not implement this.
      
                    return parent.startActionModeForChild(this, callback);
      
                }
      
            }
      
            /**
      
             * Call {@link Context#startActivityForResult(String, Intent, int, Bundle)} for the View's
      
             * Context, creating a unique View identifier to retrieve the result.
      
             *
      
             * @param intent The Intent to be started.
      
             * @param requestCode The request code to use.
      
             * @hide
      
             */
      
            public void startActivityForResult(Intent intent, int requestCode) {
      
                mStartActivityRequestWho = "@android:view:" + System.identityHashCode(this);
      
                getContext().startActivityForResult(mStartActivityRequestWho, intent, requestCode, null);
      
            }
      
            /**
      
             * If this View corresponds to the calling who, dispatches the activity result.
      
             * @param who The identifier for the targeted View to receive the result.
      
             * @param requestCode The integer request code originally supplied to
      
             *                    startActivityForResult(), allowing you to identify who this
      
             *                    result came from.
      
             * @param resultCode The integer result code returned by the child activity
      
             *                   through its setResult().
      
             * @param data An Intent, which can return result data to the caller
      
             *               (various data can be attached to Intent "extras").
      
             * @return {@code true} if the activity result was dispatched.
      
             * @hide
      
             */
      
            public boolean dispatchActivityResult(
      
                    String who, int requestCode, int resultCode, Intent data) {
      
                if (mStartActivityRequestWho != null && mStartActivityRequestWho.equals(who)) {
      
                    onActivityResult(requestCode, resultCode, data);
      
                    mStartActivityRequestWho = null;
      
                    return true;
      
                }
      
                return false;
      
            }
      
            /**
      
             * Receive the result from a previous call to {@link #startActivityForResult(Intent, int)}.
      
             *
      
             * @param requestCode The integer request code originally supplied to
      
             *                    startActivityForResult(), allowing you to identify who this
      
             *                    result came from.
      
             * @param resultCode The integer result code returned by the child activity
      
             *                   through its setResult().
      
             * @param data An Intent, which can return result data to the caller
      
             *               (various data can be attached to Intent "extras").
      
             * @hide
      
             */
      
            public void onActivityResult(int requestCode, int resultCode, Intent data) {
      
                // Do nothing.
      
            }
      
            /**
      
             * Register a callback to be invoked when a hardware key is pressed in this view.
      
             * Key presses in software input methods will generally not trigger the methods of
      
             * this listener.
      
             * @param l the key listener to attach to this view
      
             */
      
            public void setOnKeyListener(OnKeyListener l) {
      
                getListenerInfo().mOnKeyListener = l;
      
            }
      
            /**
      
             * Register a callback to be invoked when a touch event is sent to this view.
      
             * @param l the touch listener to attach to this view
      
             */
      
            public void setOnTouchListener(OnTouchListener l) {
      
                getListenerInfo().mOnTouchListener = l;
      
            }
      
            /**
      
             * Register a callback to be invoked when a generic motion event is sent to this view.
      
             * @param l the generic motion listener to attach to this view
      
             */
      
            public void setOnGenericMotionListener(OnGenericMotionListener l) {
      
                getListenerInfo().mOnGenericMotionListener = l;
      
            }
      
            /**
      
             * Register a callback to be invoked when a hover event is sent to this view.
      
             * @param l the hover listener to attach to this view
      
             */
      
            public void setOnHoverListener(OnHoverListener l) {
      
                getListenerInfo().mOnHoverListener = l;
      
            }
      
            /**
      
             * Register a drag event listener callback object for this View. The parameter is
      
             * an implementation of {@link android.view.View.OnDragListener}. To send a drag event to a
      
             * View, the system calls the
      
             * {@link android.view.View.OnDragListener#onDrag(View,DragEvent)} method.
      
             * @param l An implementation of {@link android.view.View.OnDragListener}.
      
             */
      
            public void setOnDragListener(OnDragListener l) {
      
                getListenerInfo().mOnDragListener = l;
      
            }
      
            /**
      
             * Give this view focus. This will cause
      
             * {@link #onFocusChanged(boolean, int, android.graphics.Rect)} to be called.
      
             *
      
             * Note: this does not check whether this {@link View} should get focus, it just
      
             * gives it focus no matter what.  It should only be called internally by framework
      
             * code that knows what it is doing, namely {@link #requestFocus(int, Rect)}.
      
             *
      
             * @param direction values are {@link View#FOCUS_UP}, {@link View#FOCUS_DOWN},
      
             *        {@link View#FOCUS_LEFT} or {@link View#FOCUS_RIGHT}. This is the direction which
      
             *        focus moved when requestFocus() is called. It may not always
      
             *        apply, in which case use the default View.FOCUS_DOWN.
      
             * @param previouslyFocusedRect The rectangle of the view that had focus
      
             *        prior in this View's coordinate system.
      
             */
      
            void handleFocusGainInternal(@FocusRealDirection int direction, Rect previouslyFocusedRect) {
      
                if (DBG) {
      
                    System.out.println(this + " requestFocus()");
      
                }
      
                if ((mPrivateFlags & PFLAG_FOCUSED) == 0) {
      
                    mPrivateFlags |= PFLAG_FOCUSED;
      
                    View oldFocus = (mAttachInfo != null) ? getRootView().findFocus() : null;
      
                    if (mParent != null) {
      
                        mParent.requestChildFocus(this, this);
      
                    }
      
                    if (mAttachInfo != null) {
      
                        mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(oldFocus, this);
      
                    }
      
                    onFocusChanged(true, direction, previouslyFocusedRect);
      
                    refreshDrawableState();
      
                }
      
            }
      
            /**
      
             * Populates <code>outRect</code> with the hotspot bounds. By default,
      
             * the hotspot bounds are identical to the screen bounds.
      
             *
      
             * @param outRect rect to populate with hotspot bounds
      
             * @hide Only for internal use by views and widgets.
      
             */
      
            public void getHotspotBounds(Rect outRect) {
      
                final Drawable background = getBackground();
      
                if (background != null) {
      
                    background.getHotspotBounds(outRect);
      
                } else {
      
                    getBoundsOnScreen(outRect);
      
                }
      
            }
      
            /**
      
             * Request that a rectangle of this view be visible on the screen,
      
             * scrolling if necessary just enough.
      
             *
      
             * <p>A View should call this if it maintains some notion of which part
      
             * of its content is interesting.  For example, a text editing view
      
             * should call this when its cursor moves.
      
             *
      
             * @param rectangle The rectangle.
      
             * @return Whether any parent scrolled.
      
             */
      
            public boolean requestRectangleOnScreen(Rect rectangle) {
      
                return requestRectangleOnScreen(rectangle, false);
      
            }
      
            /**
      
             * Request that a rectangle of this view be visible on the screen,
      
             * scrolling if necessary just enough.
      
             *
      
             * <p>A View should call this if it maintains some notion of which part
      
             * of its content is interesting.  For example, a text editing view
      
             * should call this when its cursor moves.
      
             *
      
             * <p>When <code>immediate</code> is set to true, scrolling will not be
      
             * animated.
      
             *
      
             * @param rectangle The rectangle.
      
             * @param immediate True to forbid animated scrolling, false otherwise
      
             * @return Whether any parent scrolled.
      
             */
      
            public boolean requestRectangleOnScreen(Rect rectangle, boolean immediate) {
      
                if (mParent == null) {
      
                    return false;
      
                }
      
                View child = this;
      
                RectF position = (mAttachInfo != null) ? mAttachInfo.mTmpTransformRect : new RectF();
      
                position.set(rectangle);
      
                ViewParent parent = mParent;
      
                boolean scrolled = false;
      
                while (parent != null) {
      
                    rectangle.set((int) position.left, (int) position.top,
      
                            (int) position.right, (int) position.bottom);
      
                    scrolled |= parent.requestChildRectangleOnScreen(child,
      
                            rectangle, immediate);
      
                    if (!child.hasIdentityMatrix()) {
      
                        child.getMatrix().mapRect(position);
      
                    }
      
                    position.offset(child.mLeft, child.mTop);
      
                    if (!(parent instanceof View)) {
      
                        break;
      
                    }
      
                    View parentView = (View) parent;
      
                    position.offset(-parentView.getScrollX(), -parentView.getScrollY());
      
                    child = parentView;
      
                    parent = child.getParent();
      
                }
      
                return scrolled;
      
            }
      
            /**
      
             * Called when this view wants to give up focus. If focus is cleared
      
             * {@link #onFocusChanged(boolean, int, android.graphics.Rect)} is called.
      
             * <p>
      
             * <strong>Note:</strong> When a View clears focus the framework is trying
      
             * to give focus to the first focusable View from the top. Hence, if this
      
             * View is the first from the top that can take focus, then all callbacks
      
             * related to clearing focus will be invoked after which the framework will
      
             * give focus to this view.
      
             * </p>
      
             */
      
            public void clearFocus() {
      
                if (DBG) {
      
                    System.out.println(this + " clearFocus()");
      
                }
      
                clearFocusInternal(null, true, true);
      
            }
      
            /**
      
             * Clears focus from the view, optionally propagating the change up through
      
             * the parent hierarchy and requesting that the root view place new focus.
      
             *
      
             * @param propagate whether to propagate the change up through the parent
      
             *            hierarchy
      
             * @param refocus when propagate is true, specifies whether to request the
      
             *            root view place new focus
      
             */
      
            void clearFocusInternal(View focused, boolean propagate, boolean refocus) {
      
                if ((mPrivateFlags & PFLAG_FOCUSED) != 0) {
      
                    mPrivateFlags &= ~PFLAG_FOCUSED;
      
                    if (propagate && mParent != null) {
      
                        mParent.clearChildFocus(this);
      
                    }
      
                    onFocusChanged(false, 0, null);
      
                    refreshDrawableState();
      
                    if (propagate && (!refocus || !rootViewRequestFocus())) {
      
                        notifyGlobalFocusCleared(this);
      
                    }
      
                }
      
            }
      
            void notifyGlobalFocusCleared(View oldFocus) {
      
                if (oldFocus != null && mAttachInfo != null) {
      
                    mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(oldFocus, null);
      
                }
      
            }
      
            boolean rootViewRequestFocus() {
      
                final View root = getRootView();
      
                return root != null && root.requestFocus();
      
            }
      
            /**
      
             * Called internally by the view system when a new view is getting focus.
      
             * This is what clears the old focus.
      
             * <p>
      
             * <b>NOTE:</b> The parent view's focused child must be updated manually
      
             * after calling this method. Otherwise, the view hierarchy may be left in
      
             * an inconstent state.
      
             */
      
            void unFocus(View focused) {
      
                if (DBG) {
      
                    System.out.println(this + " unFocus()");
      
                }
      
                clearFocusInternal(focused, false, false);
      
            }
      
            /**
      
             * Returns true if this view has focus itself, or is the ancestor of the
      
             * view that has focus.
      
             *
      
             * @return True if this view has or contains focus, false otherwise.
      
             */
      
            @ViewDebug.ExportedProperty(category = "focus")
      
            public boolean hasFocus() {
      
                return (mPrivateFlags & PFLAG_FOCUSED) != 0;
      
            }
      
            /**
      
             * Returns true if this view is focusable or if it contains a reachable View
      
             * for which {@link #hasFocusable()} returns true. A "reachable hasFocusable()"
      
             * is a View whose parents do not block descendants focus.
      
             *
      
             * Only {@link #VISIBLE} views are considered focusable.
      
             *
      
             * @return True if the view is focusable or if the view contains a focusable
      
             *         View, false otherwise.
      
             *
      
             * @see ViewGroup#FOCUS_BLOCK_DESCENDANTS
      
             * @see ViewGroup#getTouchscreenBlocksFocus()
      
             */
      
            public boolean hasFocusable() {
      
                if (!isFocusableInTouchMode()) {
      
                    for (ViewParent p = mParent; p instanceof ViewGroup; p = p.getParent()) {
      
                        final ViewGroup g = (ViewGroup) p;
      
                        if (g.shouldBlockFocusForTouchscreen()) {
      
                            return false;
      
                        }
      
                    }
      
                }
      
                return (mViewFlags & VISIBILITY_MASK) == VISIBLE && isFocusable();
      
            }
      
            /**
      
             * Called by the view system when the focus state of this view changes.
      
             * When the focus change event is caused by directional navigation, direction
      
             * and previouslyFocusedRect provide insight into where the focus is coming from.
      
             * When overriding, be sure to call up through to the super class so that
      
             * the standard focus handling will occur.
      
             *
      
             * @param gainFocus True if the View has focus; false otherwise.
      
             * @param direction The direction focus has moved when requestFocus()
      
             *                  is called to give this view focus. Values are
      
             *                  {@link #FOCUS_UP}, {@link #FOCUS_DOWN}, {@link #FOCUS_LEFT},
      
             *                  {@link #FOCUS_RIGHT}, {@link #FOCUS_FORWARD}, or {@link #FOCUS_BACKWARD}.
      
             *                  It may not always apply, in which case use the default.
      
             * @param previouslyFocusedRect The rectangle, in this view's coordinate
      
             *        system, of the previously focused view.  If applicable, this will be
      
             *        passed in as finer grained information about where the focus is coming
      
             *        from (in addition to direction).  Will be <code>null</code> otherwise.
      
             */
      
            @CallSuper
      
            protected void onFocusChanged(boolean gainFocus, @FocusDirection int direction,
      
                    @Nullable Rect previouslyFocusedRect) {
      
                if (gainFocus) {
      
                    sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED);
      
                } else {
      
                    notifyViewAccessibilityStateChangedIfNeeded(
      
                            AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
      
                }
      
                InputMethodManager imm = InputMethodManager.peekInstance();
      
                if (!gainFocus) {
      
                    if (isPressed()) {
      
                        setPressed(false);
      
                    }
      
                    if (imm != null && mAttachInfo != null
      
                            && mAttachInfo.mHasWindowFocus) {
      
                        imm.focusOut(this);
      
                    }
      
                    onFocusLost();
      
                } else if (imm != null && mAttachInfo != null
      
                        && mAttachInfo.mHasWindowFocus) {
      
                    imm.focusIn(this);
      
                }
      
                invalidate(true);
      
                ListenerInfo li = mListenerInfo;
      
                if (li != null && li.mOnFocusChangeListener != null) {
      
                    li.mOnFocusChangeListener.onFocusChange(this, gainFocus);
      
                }
      
                if (mAttachInfo != null) {
      
                    mAttachInfo.mKeyDispatchState.reset(this);
      
                }
      
            }
      
            /**
      
             * Sends an accessibility event of the given type. If accessibility is
      
             * not enabled this method has no effect. The default implementation calls
      
             * {@link #onInitializeAccessibilityEvent(AccessibilityEvent)} first
      
             * to populate information about the event source (this View), then calls
      
             * {@link #dispatchPopulateAccessibilityEvent(AccessibilityEvent)} to
      
             * populate the text content of the event source including its descendants,
      
             * and last calls
      
             * {@link ViewParent#requestSendAccessibilityEvent(View, AccessibilityEvent)}
      
             * on its parent to request sending of the event to interested parties.
      
             * <p>
      
             * If an {@link AccessibilityDelegate} has been specified via calling
      
             * {@link #setAccessibilityDelegate(AccessibilityDelegate)} its
      
             * {@link AccessibilityDelegate#sendAccessibilityEvent(View, int)} is
      
             * responsible for handling this call.
      
             * </p>
      
             *
      
             * @param eventType The type of the event to send, as defined by several types from
      
             * {@link android.view.accessibility.AccessibilityEvent}, such as
      
             * {@link android.view.accessibility.AccessibilityEvent#TYPE_VIEW_CLICKED} or
      
             * {@link android.view.accessibility.AccessibilityEvent#TYPE_VIEW_HOVER_ENTER}.
      
             *
      
             * @see #onInitializeAccessibilityEvent(AccessibilityEvent)
      
             * @see #dispatchPopulateAccessibilityEvent(AccessibilityEvent)
      
             * @see ViewParent#requestSendAccessibilityEvent(View, AccessibilityEvent)
      
             * @see AccessibilityDelegate
      
             */
      
            public void sendAccessibilityEvent(int eventType) {
      
                if (mAccessibilityDelegate != null) {
      
                    mAccessibilityDelegate.sendAccessibilityEvent(this, eventType);
      
                } else {
      
                    sendAccessibilityEventInternal(eventType);
      
                }
      
            }
      
            /**
      
             * Convenience method for sending a {@link AccessibilityEvent#TYPE_ANNOUNCEMENT}
      
             * {@link AccessibilityEvent} to make an announcement which is related to some
      
             * sort of a context change for which none of the events representing UI transitions
      
             * is a good fit. For example, announcing a new page in a book. If accessibility
      
             * is not enabled this method does nothing.
      
             *
      
             * @param text The announcement text.
      
             */
      
            public void announceForAccessibility(CharSequence text) {
      
                if (AccessibilityManager.getInstance(mContext).isEnabled() && mParent != null) {
      
                    AccessibilityEvent event = AccessibilityEvent.obtain(
      
                            AccessibilityEvent.TYPE_ANNOUNCEMENT);
      
                    onInitializeAccessibilityEvent(event);
      
                    event.getText().add(text);
      
                    event.setContentDescription(null);
      
                    mParent.requestSendAccessibilityEvent(this, event);
      
                }
      
            }
      
            /**
      
             * @see #sendAccessibilityEvent(int)
      
             *
      
             * Note: Called from the default {@link AccessibilityDelegate}.
      
             *
      
             * @hide
      
             */
      
            public void sendAccessibilityEventInternal(int eventType) {
      
                if (AccessibilityManager.getInstance(mContext).isEnabled()) {
      
                    sendAccessibilityEventUnchecked(AccessibilityEvent.obtain(eventType));
      
                }
      
            }
      
            /**
      
             * This method behaves exactly as {@link #sendAccessibilityEvent(int)} but
      
             * takes as an argument an empty {@link AccessibilityEvent} and does not
      
             * perform a check whether accessibility is enabled.
      
             * <p>
      
             * If an {@link AccessibilityDelegate} has been specified via calling
      
             * {@link #setAccessibilityDelegate(AccessibilityDelegate)} its
      
             * {@link AccessibilityDelegate#sendAccessibilityEventUnchecked(View, AccessibilityEvent)}
      
             * is responsible for handling this call.
      
             * </p>
      
             *
      
             * @param event The event to send.
      
             *
      
             * @see #sendAccessibilityEvent(int)
      
             */
      
            public void sendAccessibilityEventUnchecked(AccessibilityEvent event) {
      
                if (mAccessibilityDelegate != null) {
      
                    mAccessibilityDelegate.sendAccessibilityEventUnchecked(this, event);
      
                } else {
      
                    sendAccessibilityEventUncheckedInternal(event);
      
                }
      
            }
      
            /**
      
             * @see #sendAccessibilityEventUnchecked(AccessibilityEvent)
      
             *
      
             * Note: Called from the default {@link AccessibilityDelegate}.
      
             *
      
             * @hide
      
             */
      
            public void sendAccessibilityEventUncheckedInternal(AccessibilityEvent event) {
      
                if (!isShown()) {
      
                    return;
      
                }
      
                onInitializeAccessibilityEvent(event);
      
                // Only a subset of accessibility events populates text content.
      
                if ((event.getEventType() & POPULATING_ACCESSIBILITY_EVENT_TYPES) != 0) {
      
                    dispatchPopulateAccessibilityEvent(event);
      
                }
      
                // In the beginning we called #isShown(), so we know that getParent() is not null.
      
                getParent().requestSendAccessibilityEvent(this, event);
      
            }
      
            /**
      
             * Dispatches an {@link AccessibilityEvent} to the {@link View} first and then
      
             * to its children for adding their text content to the event. Note that the
      
             * event text is populated in a separate dispatch path since we add to the
      
             * event not only the text of the source but also the text of all its descendants.
      
             * A typical implementation will call
      
             * {@link #onPopulateAccessibilityEvent(AccessibilityEvent)} on the this view
      
             * and then call the {@link #dispatchPopulateAccessibilityEvent(AccessibilityEvent)}
      
             * on each child. Override this method if custom population of the event text
      
             * content is required.
      
             * <p>
      
             * If an {@link AccessibilityDelegate} has been specified via calling
      
             * {@link #setAccessibilityDelegate(AccessibilityDelegate)} its
      
             * {@link AccessibilityDelegate#dispatchPopulateAccessibilityEvent(View, AccessibilityEvent)}
      
             * is responsible for handling this call.
      
             * </p>
      
             * <p>
      
             * <em>Note:</em> Accessibility events of certain types are not dispatched for
      
             * populating the event text via this method. For details refer to {@link AccessibilityEvent}.
      
             * </p>
      
             *
      
             * @param event The event.
      
             *
      
             * @return True if the event population was completed.
      
             */
      
            public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
      
                if (mAccessibilityDelegate != null) {
      
                    return mAccessibilityDelegate.dispatchPopulateAccessibilityEvent(this, event);
      
                } else {
      
                    return dispatchPopulateAccessibilityEventInternal(event);
      
                }
      
            }
      
            /**
      
             * @see #dispatchPopulateAccessibilityEvent(AccessibilityEvent)
      
             *
      
             * Note: Called from the default {@link AccessibilityDelegate}.
      
             *
      
             * @hide
      
             */
      
            public boolean dispatchPopulateAccessibilityEventInternal(AccessibilityEvent event) {
      
                onPopulateAccessibilityEvent(event);
      
                return false;
      
            }
      
            /**
      
             * Called from {@link #dispatchPopulateAccessibilityEvent(AccessibilityEvent)}
      
             * giving a chance to this View to populate the accessibility event with its
      
             * text content. While this method is free to modify event
      
             * attributes other than text content, doing so should normally be performed in
      
             * {@link #onInitializeAccessibilityEvent(AccessibilityEvent)}.
      
             * <p>
      
             * Example: Adding formatted date string to an accessibility event in addition
      
             *          to the text added by the super implementation:
      
             * <pre> public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
      
             *     super.onPopulateAccessibilityEvent(event);
      
             *     final int flags = DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_WEEKDAY;
      
             *     String selectedDateUtterance = DateUtils.formatDateTime(mContext,
      
             *         mCurrentDate.getTimeInMillis(), flags);
      
             *     event.getText().add(selectedDateUtterance);
      
             * }</pre>
      
             * <p>
      
             * If an {@link AccessibilityDelegate} has been specified via calling
      
             * {@link #setAccessibilityDelegate(AccessibilityDelegate)} its
      
             * {@link AccessibilityDelegate#onPopulateAccessibilityEvent(View, AccessibilityEvent)}
      
             * is responsible for handling this call.
      
             * </p>
      
             * <p class="note"><strong>Note:</strong> Always call the super implementation before adding
      
             * information to the event, in case the default implementation has basic information to add.
      
             * </p>
      
             *
      
             * @param event The accessibility event which to populate.
      
             *
      
             * @see #sendAccessibilityEvent(int)
      
             * @see #dispatchPopulateAccessibilityEvent(AccessibilityEvent)
      
             */
      
            @CallSuper
      
            public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
      
                if (mAccessibilityDelegate != null) {
      
                    mAccessibilityDelegate.onPopulateAccessibilityEvent(this, event);
      
                } else {
      
                    onPopulateAccessibilityEventInternal(event);
      
                }
      
            }
      
            /**
      
             * @see #onPopulateAccessibilityEvent(AccessibilityEvent)
      
             *
      
             * Note: Called from the default {@link AccessibilityDelegate}.
      
             *
      
             * @hide
      
             */
      
            public void onPopulateAccessibilityEventInternal(AccessibilityEvent event) {
      
            }
      
            /**
      
             * Initializes an {@link AccessibilityEvent} with information about
      
             * this View which is the event source. In other words, the source of
      
             * an accessibility event is the view whose state change triggered firing
      
             * the event.
      
             * <p>
      
             * Example: Setting the password property of an event in addition
      
             *          to properties set by the super implementation:
      
             * <pre> public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
      
             *     super.onInitializeAccessibilityEvent(event);
      
             *     event.setPassword(true);
      
             * }</pre>
      
             * <p>
      
             * If an {@link AccessibilityDelegate} has been specified via calling
      
             * {@link #setAccessibilityDelegate(AccessibilityDelegate)} its
      
             * {@link AccessibilityDelegate#onInitializeAccessibilityEvent(View, AccessibilityEvent)}
      
             * is responsible for handling this call.
      
             * </p>
      
             * <p class="note"><strong>Note:</strong> Always call the super implementation before adding
      
             * information to the event, in case the default implementation has basic information to add.
      
             * </p>
      
             * @param event The event to initialize.
      
             *
      
             * @see #sendAccessibilityEvent(int)
      
             * @see #dispatchPopulateAccessibilityEvent(AccessibilityEvent)
      
             */
      
            @CallSuper
      
            public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
      
                if (mAccessibilityDelegate != null) {
      
                    mAccessibilityDelegate.onInitializeAccessibilityEvent(this, event);
      
                } else {
      
                    onInitializeAccessibilityEventInternal(event);
      
                }
      
            }
      
            /**
      
             * @see #onInitializeAccessibilityEvent(AccessibilityEvent)
      
             *
      
             * Note: Called from the default {@link AccessibilityDelegate}.
      
             *
      
             * @hide
      
             */
      
            public void onInitializeAccessibilityEventInternal(AccessibilityEvent event) {
      
                event.setSource(this);
      
                event.setClassName(getAccessibilityClassName());
      
                event.setPackageName(getContext().getPackageName());
      
                event.setEnabled(isEnabled());
      
                event.setContentDescription(mContentDescription);
      
                switch (event.getEventType()) {
      
                    case AccessibilityEvent.TYPE_VIEW_FOCUSED: {
      
                        ArrayList<View> focusablesTempList = (mAttachInfo != null)
      
                                ? mAttachInfo.mTempArrayList : new ArrayList<View>();
      
                        getRootView().addFocusables(focusablesTempList, View.FOCUS_FORWARD, FOCUSABLES_ALL);
      
                        event.setItemCount(focusablesTempList.size());
      
                        event.setCurrentItemIndex(focusablesTempList.indexOf(this));
      
                        if (mAttachInfo != null) {
      
                            focusablesTempList.clear();
      
                        }
      
                    } break;
      
                    case AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED: {
      
                        CharSequence text = getIterableTextForAccessibility();
      
                        if (text != null && text.length() > 0) {
      
                            event.setFromIndex(getAccessibilitySelectionStart());
      
                            event.setToIndex(getAccessibilitySelectionEnd());
      
                            event.setItemCount(text.length());
      
                        }
      
                    } break;
      
                }
      
            }
      
            /**
      
             * Returns an {@link AccessibilityNodeInfo} representing this view from the
      
             * point of view of an {@link android.accessibilityservice.AccessibilityService}.
      
             * This method is responsible for obtaining an accessibility node info from a
      
             * pool of reusable instances and calling
      
             * {@link #onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo)} on this view to
      
             * initialize the former.
      
             * <p>
      
             * Note: The client is responsible for recycling the obtained instance by calling
      
             *       {@link AccessibilityNodeInfo#recycle()} to minimize object creation.
      
             * </p>
      
             *
      
             * @return A populated {@link AccessibilityNodeInfo}.
      
             *
      
             * @see AccessibilityNodeInfo
      
             */
      
            public AccessibilityNodeInfo createAccessibilityNodeInfo() {
      
                if (mAccessibilityDelegate != null) {
      
                    return mAccessibilityDelegate.createAccessibilityNodeInfo(this);
      
                } else {
      
                    return createAccessibilityNodeInfoInternal();
      
                }
      
            }
      
            /**
      
             * @see #createAccessibilityNodeInfo()
      
             *
      
             * @hide
      
             */
      
            public AccessibilityNodeInfo createAccessibilityNodeInfoInternal() {
      
                AccessibilityNodeProvider provider = getAccessibilityNodeProvider();
      
                if (provider != null) {
      
                    return provider.createAccessibilityNodeInfo(AccessibilityNodeProvider.HOST_VIEW_ID);
      
                } else {
      
                    AccessibilityNodeInfo info = AccessibilityNodeInfo.obtain(this);
      
                    onInitializeAccessibilityNodeInfo(info);
      
                    return info;
      
                }
      
            }
      
            /**
      
             * Initializes an {@link AccessibilityNodeInfo} with information about this view.
      
             * The base implementation sets:
      
             * <ul>
      
             *   <li>{@link AccessibilityNodeInfo#setParent(View)},</li>
      
             *   <li>{@link AccessibilityNodeInfo#setBoundsInParent(Rect)},</li>
      
             *   <li>{@link AccessibilityNodeInfo#setBoundsInScreen(Rect)},</li>
      
             *   <li>{@link AccessibilityNodeInfo#setPackageName(CharSequence)},</li>
      
             *   <li>{@link AccessibilityNodeInfo#setClassName(CharSequence)},</li>
      
             *   <li>{@link AccessibilityNodeInfo#setContentDescription(CharSequence)},</li>
      
             *   <li>{@link AccessibilityNodeInfo#setEnabled(boolean)},</li>
      
             *   <li>{@link AccessibilityNodeInfo#setClickable(boolean)},</li>
      
             *   <li>{@link AccessibilityNodeInfo#setFocusable(boolean)},</li>
      
             *   <li>{@link AccessibilityNodeInfo#setFocused(boolean)},</li>
      
             *   <li>{@link AccessibilityNodeInfo#setLongClickable(boolean)},</li>
      
             *   <li>{@link AccessibilityNodeInfo#setSelected(boolean)},</li>
      
             *   <li>{@link AccessibilityNodeInfo#setContextClickable(boolean)}</li>
      
             * </ul>
      
             * <p>
      
             * Subclasses should override this method, call the super implementation,
      
             * and set additional attributes.
      
             * </p>
      
             * <p>
      
             * If an {@link AccessibilityDelegate} has been specified via calling
      
             * {@link #setAccessibilityDelegate(AccessibilityDelegate)} its
      
             * {@link AccessibilityDelegate#onInitializeAccessibilityNodeInfo(View, AccessibilityNodeInfo)}
      
             * is responsible for handling this call.
      
             * </p>
      
             *
      
             * @param info The instance to initialize.
      
             */
      
            @CallSuper
      
            public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
      
                if (mAccessibilityDelegate != null) {
      
                    mAccessibilityDelegate.onInitializeAccessibilityNodeInfo(this, info);
      
                } else {
      
                    onInitializeAccessibilityNodeInfoInternal(info);
      
                }
      
            }
      
            /**
      
             * Gets the location of this view in screen coordinates.
      
             *
      
             * @param outRect The output location
      
             * @hide
      
             */
      
            public void getBoundsOnScreen(Rect outRect) {
      
                getBoundsOnScreen(outRect, false);
      
            }
      
            /**
      
             * Gets the location of this view in screen coordinates.
      
             *
      
             * @param outRect The output location
      
             * @param clipToParent Whether to clip child bounds to the parent ones.
      
             * @hide
      
             */
      
            public void getBoundsOnScreen(Rect outRect, boolean clipToParent) {
      
                if (mAttachInfo == null) {
      
                    return;
      
                }
      
                RectF position = mAttachInfo.mTmpTransformRect;
      
                position.set(0, 0, mRight - mLeft, mBottom - mTop);
      
                if (!hasIdentityMatrix()) {
      
                    getMatrix().mapRect(position);
      
                }
      
                position.offset(mLeft, mTop);
      
                ViewParent parent = mParent;
      
                while (parent instanceof View) {
      
                    View parentView = (View) parent;
      
                    position.offset(-parentView.mScrollX, -parentView.mScrollY);
      
                    if (clipToParent) {
      
                        position.left = Math.max(position.left, 0);
      
                        position.top = Math.max(position.top, 0);
      
                        position.right = Math.min(position.right, parentView.getWidth());
      
                        position.bottom = Math.min(position.bottom, parentView.getHeight());
      
                    }
      
                    if (!parentView.hasIdentityMatrix()) {
      
                        parentView.getMatrix().mapRect(position);
      
                    }
      
                    position.offset(parentView.mLeft, parentView.mTop);
      
                    parent = parentView.mParent;
      
                }
      
                if (parent instanceof ViewRootImpl) {
      
                    ViewRootImpl viewRootImpl = (ViewRootImpl) parent;
      
                    position.offset(0, -viewRootImpl.mCurScrollY);
      
                }
      
                position.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop);
      
                outRect.set((int) (position.left + 0.5f), (int) (position.top + 0.5f),
      
                        (int) (position.right + 0.5f), (int) (position.bottom + 0.5f));
      
            }
      
            /**
      
             * Return the class name of this object to be used for accessibility purposes.
      
             * Subclasses should only override this if they are implementing something that
      
             * should be seen as a completely new class of view when used by accessibility,
      
             * unrelated to the class it is deriving from.  This is used to fill in
      
             * {@link AccessibilityNodeInfo#setClassName AccessibilityNodeInfo.setClassName}.
      
             */
      
            public CharSequence getAccessibilityClassName() {
      
                return View.class.getName();
      
            }
      
            /**
      
             * Called when assist structure is being retrieved from a view as part of
      
             * {@link android.app.Activity#onProvideAssistData Activity.onProvideAssistData}.
      
             * @param structure Fill in with structured view data.  The default implementation
      
             * fills in all data that can be inferred from the view itself.
      
             */
      
            public void onProvideStructure(ViewStructure structure) {
      
                final int id = mID;
      
                if (id > 0 && (id&0xff000000) != 0 && (id&0x00ff0000) != 0
      
                        && (id&0x0000ffff) != 0) {
      
                    String pkg, type, entry;
      
                    try {
      
                        final Resources res = getResources();
      
                        entry = res.getResourceEntryName(id);
      
                        type = res.getResourceTypeName(id);
      
                        pkg = res.getResourcePackageName(id);
      
                    } catch (Resources.NotFoundException e) {
      
                        entry = type = pkg = null;
      
                    }
      
                    structure.setId(id, pkg, type, entry);
      
                } else {
      
                    structure.setId(id, null, null, null);
      
                }
      
                structure.setDimens(mLeft, mTop, mScrollX, mScrollY, mRight - mLeft, mBottom - mTop);
      
                if (!hasIdentityMatrix()) {
      
                    structure.setTransformation(getMatrix());
      
                }
      
                structure.setElevation(getZ());
      
                structure.setVisibility(getVisibility());
      
                structure.setEnabled(isEnabled());
      
                if (isClickable()) {
      
                    structure.setClickable(true);
      
                }
      
                if (isFocusable()) {
      
                    structure.setFocusable(true);
      
                }
      
                if (isFocused()) {
      
                    structure.setFocused(true);
      
                }
      
                if (isAccessibilityFocused()) {
      
                    structure.setAccessibilityFocused(true);
      
                }
      
                if (isSelected()) {
      
                    structure.setSelected(true);
      
                }
      
                if (isActivated()) {
      
                    structure.setActivated(true);
      
                }
      
                if (isLongClickable()) {
      
                    structure.setLongClickable(true);
      
                }
      
                if (this instanceof Checkable) {
      
                    structure.setCheckable(true);
      
                    if (((Checkable)this).isChecked()) {
      
                        structure.setChecked(true);
      
                    }
      
                }
      
                if (isContextClickable()) {
      
                    structure.setContextClickable(true);
      
                }
      
                structure.setClassName(getAccessibilityClassName().toString());
      
                structure.setContentDescription(getContentDescription());
      
            }
      
            /**
      
             * Called when assist structure is being retrieved from a view as part of
      
             * {@link android.app.Activity#onProvideAssistData Activity.onProvideAssistData} to
      
             * generate additional virtual structure under this view.  The defaullt implementation
      
             * uses {@link #getAccessibilityNodeProvider()} to try to generate this from the
      
             * view's virtual accessibility nodes, if any.  You can override this for a more
      
             * optimal implementation providing this data.
      
             */
      
            public void onProvideVirtualStructure(ViewStructure structure) {
      
                AccessibilityNodeProvider provider = getAccessibilityNodeProvider();
      
                if (provider != null) {
      
                    AccessibilityNodeInfo info = createAccessibilityNodeInfo();
      
                    structure.setChildCount(1);
      
                    ViewStructure root = structure.newChild(0);
      
                    populateVirtualStructure(root, provider, info);
      
                    info.recycle();
      
                }
      
            }
      
            private void populateVirtualStructure(ViewStructure structure,
      
                    AccessibilityNodeProvider provider, AccessibilityNodeInfo info) {
      
                structure.setId(AccessibilityNodeInfo.getVirtualDescendantId(info.getSourceNodeId()),
      
                        null, null, null);
      
                Rect rect = structure.getTempRect();
      
                info.getBoundsInParent(rect);
      
                structure.setDimens(rect.left, rect.top, 0, 0, rect.width(), rect.height());
      
                structure.setVisibility(VISIBLE);
      
                structure.setEnabled(info.isEnabled());
      
                if (info.isClickable()) {
      
                    structure.setClickable(true);
      
                }
      
                if (info.isFocusable()) {
      
                    structure.setFocusable(true);
      
                }
      
                if (info.isFocused()) {
      
                    structure.setFocused(true);
      
                }
      
                if (info.isAccessibilityFocused()) {
      
                    structure.setAccessibilityFocused(true);
      
                }
      
                if (info.isSelected()) {
      
                    structure.setSelected(true);
      
                }
      
                if (info.isLongClickable()) {
      
                    structure.setLongClickable(true);
      
                }
      
                if (info.isCheckable()) {
      
                    structure.setCheckable(true);
      
                    if (info.isChecked()) {
      
                        structure.setChecked(true);
      
                    }
      
                }
      
                if (info.isContextClickable()) {
      
                    structure.setContextClickable(true);
      
                }
      
                CharSequence cname = info.getClassName();
      
                structure.setClassName(cname != null ? cname.toString() : null);
      
                structure.setContentDescription(info.getContentDescription());
      
                if (info.getText() != null || info.getError() != null) {
      
                    structure.setText(info.getText(), info.getTextSelectionStart(),
      
                            info.getTextSelectionEnd());
      
                }
      
                final int NCHILDREN = info.getChildCount();
      
                if (NCHILDREN > 0) {
      
                    structure.setChildCount(NCHILDREN);
      
                    for (int i=0; i<NCHILDREN; i++) {
      
                        AccessibilityNodeInfo cinfo = provider.createAccessibilityNodeInfo(
      
                                AccessibilityNodeInfo.getVirtualDescendantId(info.getChildId(i)));
      
                        ViewStructure child = structure.newChild(i);
      
                        populateVirtualStructure(child, provider, cinfo);
      
                        cinfo.recycle();
      
                    }
      
                }
      
            }
      
            /**
      
             * Dispatch creation of {@link ViewStructure} down the hierarchy.  The default
      
             * implementation calls {@link #onProvideStructure} and
      
             * {@link #onProvideVirtualStructure}.
      
             */
      
            public void dispatchProvideStructure(ViewStructure structure) {
      
                if (!isAssistBlocked()) {
      
                    onProvideStructure(structure);
      
                    onProvideVirtualStructure(structure);
      
                } else {
      
                    structure.setClassName(getAccessibilityClassName().toString());
      
                    structure.setAssistBlocked(true);
      
                }
      
            }
      
            /**
      
             * @see #onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo)
      
             *
      
             * Note: Called from the default {@link AccessibilityDelegate}.
      
             *
      
             * @hide
      
             */
      
            public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
      
                if (mAttachInfo == null) {
      
                    return;
      
                }
      
                Rect bounds = mAttachInfo.mTmpInvalRect;
      
                getDrawingRect(bounds);
      
                info.setBoundsInParent(bounds);
      
                getBoundsOnScreen(bounds, true);
      
                info.setBoundsInScreen(bounds);
      
                ViewParent parent = getParentForAccessibility();
      
                if (parent instanceof View) {
      
                    info.setParent((View) parent);
      
                }
      
                if (mID != View.NO_ID) {
      
                    View rootView = getRootView();
      
                    if (rootView == null) {
      
                        rootView = this;
      
                    }
      
                    View label = rootView.findLabelForView(this, mID);
      
                    if (label != null) {
      
                        info.setLabeledBy(label);
      
                    }
      
                    if ((mAttachInfo.mAccessibilityFetchFlags
      
                            & AccessibilityNodeInfo.FLAG_REPORT_VIEW_IDS) != 0
      
                            && Resources.resourceHasPackage(mID)) {
      
                        try {
      
                            String viewId = getResources().getResourceName(mID);
      
                            info.setViewIdResourceName(viewId);
      
                        } catch (Resources.NotFoundException nfe) {
      
                            /* ignore */
      
                        }
      
                    }
      
                }
      
                if (mLabelForId != View.NO_ID) {
      
                    View rootView = getRootView();
      
                    if (rootView == null) {
      
                        rootView = this;
      
                    }
      
                    View labeled = rootView.findViewInsideOutShouldExist(this, mLabelForId);
      
                    if (labeled != null) {
      
                        info.setLabelFor(labeled);
      
                    }
      
                }
      
                if (mAccessibilityTraversalBeforeId != View.NO_ID) {
      
                    View rootView = getRootView();
      
                    if (rootView == null) {
      
                        rootView = this;
      
                    }
      
                    View next = rootView.findViewInsideOutShouldExist(this,
      
                            mAccessibilityTraversalBeforeId);
      
                    if (next != null && next.includeForAccessibility()) {
      
                        info.setTraversalBefore(next);
      
                    }
      
                }
      
                if (mAccessibilityTraversalAfterId != View.NO_ID) {
      
                    View rootView = getRootView();
      
                    if (rootView == null) {
      
                        rootView = this;
      
                    }
      
                    View next = rootView.findViewInsideOutShouldExist(this,
      
                            mAccessibilityTraversalAfterId);
      
                    if (next != null && next.includeForAccessibility()) {
      
                        info.setTraversalAfter(next);
      
                    }
      
                }
      
                info.setVisibleToUser(isVisibleToUser());
      
                info.setPackageName(mContext.getPackageName());
      
                info.setClassName(getAccessibilityClassName());
      
                info.setContentDescription(getContentDescription());
      
                info.setEnabled(isEnabled());
      
                info.setClickable(isClickable());
      
                info.setFocusable(isFocusable());
      
                info.setFocused(isFocused());
      
                info.setAccessibilityFocused(isAccessibilityFocused());
      
                info.setSelected(isSelected());
      
                info.setLongClickable(isLongClickable());
      
                info.setContextClickable(isContextClickable());
      
                info.setLiveRegion(getAccessibilityLiveRegion());
      
                // TODO: These make sense only if we are in an AdapterView but all
      
                // views can be selected. Maybe from accessibility perspective
      
                // we should report as selectable view in an AdapterView.
      
                info.addAction(AccessibilityNodeInfo.ACTION_SELECT);
      
                info.addAction(AccessibilityNodeInfo.ACTION_CLEAR_SELECTION);
      
                if (isFocusable()) {
      
                    if (isFocused()) {
      
                        info.addAction(AccessibilityNodeInfo.ACTION_CLEAR_FOCUS);
      
                    } else {
      
                        info.addAction(AccessibilityNodeInfo.ACTION_FOCUS);
      
                    }
      
                }
      
                if (!isAccessibilityFocused()) {
      
                    info.addAction(AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS);
      
                } else {
      
                    info.addAction(AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS);
      
                }
      
                if (isClickable() && isEnabled()) {
      
                    info.addAction(AccessibilityNodeInfo.ACTION_CLICK);
      
                }
      
                if (isLongClickable() && isEnabled()) {
      
                    info.addAction(AccessibilityNodeInfo.ACTION_LONG_CLICK);
      
                }
      
                if (isContextClickable() && isEnabled()) {
      
                    info.addAction(AccessibilityAction.ACTION_CONTEXT_CLICK);
      
                }
      
                CharSequence text = getIterableTextForAccessibility();
      
                if (text != null && text.length() > 0) {
      
                    info.setTextSelection(getAccessibilitySelectionStart(), getAccessibilitySelectionEnd());
      
                    info.addAction(AccessibilityNodeInfo.ACTION_SET_SELECTION);
      
                    info.addAction(AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY);
      
                    info.addAction(AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY);
      
                    info.setMovementGranularities(AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER
      
                            | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD
      
                            | AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH);
      
                }
      
                info.addAction(AccessibilityAction.ACTION_SHOW_ON_SCREEN);
      
            }
      
            private View findLabelForView(View view, int labeledId) {
      
                if (mMatchLabelForPredicate == null) {
      
                    mMatchLabelForPredicate = new MatchLabelForPredicate();
      
                }
      
                mMatchLabelForPredicate.mLabeledId = labeledId;
      
                return findViewByPredicateInsideOut(view, mMatchLabelForPredicate);
      
            }
      
            /**
      
             * Computes whether this view is visible to the user. Such a view is
      
             * attached, visible, all its predecessors are visible, it is not clipped
      
             * entirely by its predecessors, and has an alpha greater than zero.
      
             *
      
             * @return Whether the view is visible on the screen.
      
             *
      
             * @hide
      
             */
      
            protected boolean isVisibleToUser() {
      
                return isVisibleToUser(null);
      
            }
      
            /**
      
             * Computes whether the given portion of this view is visible to the user.
      
             * Such a view is attached, visible, all its predecessors are visible,
      
             * has an alpha greater than zero, and the specified portion is not
      
             * clipped entirely by its predecessors.
      
             *
      
             * @param boundInView the portion of the view to test; coordinates should be relative; may be
      
             *                    <code>null</code>, and the entire view will be tested in this case.
      
             *                    When <code>true</code> is returned by the function, the actual visible
      
             *                    region will be stored in this parameter; that is, if boundInView is fully
      
             *                    contained within the view, no modification will be made, otherwise regions
      
             *                    outside of the visible area of the view will be clipped.
      
             *
      
             * @return Whether the specified portion of the view is visible on the screen.
      
             *
      
             * @hide
      
             */
      
            protected boolean isVisibleToUser(Rect boundInView) {
      
                if (mAttachInfo != null) {
      
                    // Attached to invisible window means this view is not visible.
      
                    if (mAttachInfo.mWindowVisibility != View.VISIBLE) {
      
                        return false;
      
                    }
      
                    // An invisible predecessor or one with alpha zero means
      
                    // that this view is not visible to the user.
      
                    Object current = this;
      
                    while (current instanceof View) {
      
                        View view = (View) current;
      
                        // We have attach info so this view is attached and there is no
      
                        // need to check whether we reach to ViewRootImpl on the way up.
      
                        if (view.getAlpha() <= 0 || view.getTransitionAlpha() <= 0 ||
      
                                view.getVisibility() != VISIBLE) {
      
                            return false;
      
                        }
      
                        current = view.mParent;
      
                    }
      
                    // Check if the view is entirely covered by its predecessors.
      
                    Rect visibleRect = mAttachInfo.mTmpInvalRect;
      
                    Point offset = mAttachInfo.mPoint;
      
                    if (!getGlobalVisibleRect(visibleRect, offset)) {
      
                        return false;
      
                    }
      
                    // Check if the visible portion intersects the rectangle of interest.
      
                    if (boundInView != null) {
      
                        visibleRect.offset(-offset.x, -offset.y);
      
                        return boundInView.intersect(visibleRect);
      
                    }
      
                    return true;
      
                }
      
                return false;
      
            }
      
            /**
      
             * Returns the delegate for implementing accessibility support via
      
             * composition. For more details see {@link AccessibilityDelegate}.
      
             *
      
             * @return The delegate, or null if none set.
      
             *
      
             * @hide
      
             */
      
            public AccessibilityDelegate getAccessibilityDelegate() {
      
                return mAccessibilityDelegate;
      
            }
      
            /**
      
             * Sets a delegate for implementing accessibility support via composition as
      
             * opposed to inheritance. The delegate's primary use is for implementing
      
             * backwards compatible widgets. For more details see {@link AccessibilityDelegate}.
      
             *
      
             * @param delegate The delegate instance.
      
             *
      
             * @see AccessibilityDelegate
      
             */
      
            public void setAccessibilityDelegate(@Nullable AccessibilityDelegate delegate) {
      
                mAccessibilityDelegate = delegate;
      
            }
      
            /**
      
             * Gets the provider for managing a virtual view hierarchy rooted at this View
      
             * and reported to {@link android.accessibilityservice.AccessibilityService}s
      
             * that explore the window content.
      
             * <p>
      
             * If this method returns an instance, this instance is responsible for managing
      
             * {@link AccessibilityNodeInfo}s describing the virtual sub-tree rooted at this
      
             * View including the one representing the View itself. Similarly the returned
      
             * instance is responsible for performing accessibility actions on any virtual
      
             * view or the root view itself.
      
             * </p>
      
             * <p>
      
             * If an {@link AccessibilityDelegate} has been specified via calling
      
             * {@link #setAccessibilityDelegate(AccessibilityDelegate)} its
      
             * {@link AccessibilityDelegate#getAccessibilityNodeProvider(View)}
      
             * is responsible for handling this call.
      
             * </p>
      
             *
      
             * @return The provider.
      
             *
      
             * @see AccessibilityNodeProvider
      
             */
      
            public AccessibilityNodeProvider getAccessibilityNodeProvider() {
      
                if (mAccessibilityDelegate != null) {
      
                    return mAccessibilityDelegate.getAccessibilityNodeProvider(this);
      
                } else {
      
                    return null;
      
                }
      
            }
      
            /**
      
             * Gets the unique identifier of this view on the screen for accessibility purposes.
      
             * If this {@link View} is not attached to any window, {@value #NO_ID} is returned.
      
             *
      
             * @return The view accessibility id.
      
             *
      
             * @hide
      
             */
      
            public int getAccessibilityViewId() {
      
                if (mAccessibilityViewId == NO_ID) {
      
                    mAccessibilityViewId = sNextAccessibilityViewId++;
      
                }
      
                return mAccessibilityViewId;
      
            }
      
            /**
      
             * Gets the unique identifier of the window in which this View reseides.
      
             *
      
             * @return The window accessibility id.
      
             *
      
             * @hide
      
             */
      
            public int getAccessibilityWindowId() {
      
                return mAttachInfo != null ? mAttachInfo.mAccessibilityWindowId
      
                        : AccessibilityNodeInfo.UNDEFINED_ITEM_ID;
      
            }
      
            /**
      
             * Gets the {@link View} description. It briefly describes the view and is
      
             * primarily used for accessibility support. Set this property to enable
      
             * better accessibility support for your application. This is especially
      
             * true for views that do not have textual representation (For example,
      
             * ImageButton).
      
             *
      
             * @return The content description.
      
             *
      
             * @attr ref android.R.styleable#View_contentDescription
      
             */
      
            @ViewDebug.ExportedProperty(category = "accessibility")
      
            public CharSequence getContentDescription() {
      
                return mContentDescription;
      
            }
      
            /**
      
             * Sets the {@link View} description. It briefly describes the view and is
      
             * primarily used for accessibility support. Set this property to enable
      
             * better accessibility support for your application. This is especially
      
             * true for views that do not have textual representation (For example,
      
             * ImageButton).
      
             *
      
             * @param contentDescription The content description.
      
             *
      
             * @attr ref android.R.styleable#View_contentDescription
      
             */
      
            @RemotableViewMethod
      
            public void setContentDescription(CharSequence contentDescription) {
      
                if (mContentDescription == null) {
      
                    if (contentDescription == null) {
      
                        return;
      
                    }
      
                } else if (mContentDescription.equals(contentDescription)) {
      
                    return;
      
                }
      
                mContentDescription = contentDescription;
      
                final boolean nonEmptyDesc = contentDescription != null && contentDescription.length() > 0;
      
                if (nonEmptyDesc && getImportantForAccessibility() == IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
      
                    setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
      
                    notifySubtreeAccessibilityStateChangedIfNeeded();
      
                } else {
      
                    notifyViewAccessibilityStateChangedIfNeeded(
      
                            AccessibilityEvent.CONTENT_CHANGE_TYPE_CONTENT_DESCRIPTION);
      
                }
      
            }
      
            /**
      
             * Sets the id of a view before which this one is visited in accessibility traversal.
      
             * A screen-reader must visit the content of this view before the content of the one
      
             * it precedes. For example, if view B is set to be before view A, then a screen-reader
      
             * will traverse the entire content of B before traversing the entire content of A,
      
             * regardles of what traversal strategy it is using.
      
             * <p>
      
             * Views that do not have specified before/after relationships are traversed in order
      
             * determined by the screen-reader.
      
             * </p>
      
             * <p>
      
             * Setting that this view is before a view that is not important for accessibility
      
             * or if this view is not important for accessibility will have no effect as the
      
             * screen-reader is not aware of unimportant views.
      
             * </p>
      
             *
      
             * @param beforeId The id of a view this one precedes in accessibility traversal.
      
             *
      
             * @attr ref android.R.styleable#View_accessibilityTraversalBefore
      
             *
      
             * @see #setImportantForAccessibility(int)
      
             */
      
            @RemotableViewMethod
      
            public void setAccessibilityTraversalBefore(int beforeId) {
      
                if (mAccessibilityTraversalBeforeId == beforeId) {
      
                    return;
      
                }
      
                mAccessibilityTraversalBeforeId = beforeId;
      
                notifyViewAccessibilityStateChangedIfNeeded(
      
                        AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
      
            }
      
            /**
      
             * Gets the id of a view before which this one is visited in accessibility traversal.
      
             *
      
             * @return The id of a view this one precedes in accessibility traversal if
      
             *         specified, otherwise {@link #NO_ID}.
      
             *
      
             * @see #setAccessibilityTraversalBefore(int)
      
             */
      
            public int getAccessibilityTraversalBefore() {
      
                return mAccessibilityTraversalBeforeId;
      
            }
      
            /**
      
             * Sets the id of a view after which this one is visited in accessibility traversal.
      
             * A screen-reader must visit the content of the other view before the content of this
      
             * one. For example, if view B is set to be after view A, then a screen-reader
      
             * will traverse the entire content of A before traversing the entire content of B,
      
             * regardles of what traversal strategy it is using.
      
             * <p>
      
             * Views that do not have specified before/after relationships are traversed in order
      
             * determined by the screen-reader.
      
             * </p>
      
             * <p>
      
             * Setting that this view is after a view that is not important for accessibility
      
             * or if this view is not important for accessibility will have no effect as the
      
             * screen-reader is not aware of unimportant views.
      
             * </p>
      
             *
      
             * @param afterId The id of a view this one succedees in accessibility traversal.
      
             *
      
             * @attr ref android.R.styleable#View_accessibilityTraversalAfter
      
             *
      
             * @see #setImportantForAccessibility(int)
      
             */
      
            @RemotableViewMethod
      
            public void setAccessibilityTraversalAfter(int afterId) {
      
                if (mAccessibilityTraversalAfterId == afterId) {
      
                    return;
      
                }
      
                mAccessibilityTraversalAfterId = afterId;
      
                notifyViewAccessibilityStateChangedIfNeeded(
      
                        AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
      
            }
      
            /**
      
             * Gets the id of a view after which this one is visited in accessibility traversal.
      
             *
      
             * @return The id of a view this one succeedes in accessibility traversal if
      
             *         specified, otherwise {@link #NO_ID}.
      
             *
      
             * @see #setAccessibilityTraversalAfter(int)
      
             */
      
            public int getAccessibilityTraversalAfter() {
      
                return mAccessibilityTraversalAfterId;
      
            }
      
            /**
      
             * Gets the id of a view for which this view serves as a label for
      
             * accessibility purposes.
      
             *
      
             * @return The labeled view id.
      
             */
      
            @ViewDebug.ExportedProperty(category = "accessibility")
      
            public int getLabelFor() {
      
                return mLabelForId;
      
            }
      
            /**
      
             * Sets the id of a view for which this view serves as a label for
      
             * accessibility purposes.
      
             *
      
             * @param id The labeled view id.
      
             */
      
            @RemotableViewMethod
      
            public void setLabelFor(@IdRes int id) {
      
                if (mLabelForId == id) {
      
                    return;
      
                }
      
                mLabelForId = id;
      
                if (mLabelForId != View.NO_ID
      
                        && mID == View.NO_ID) {
      
                    mID = generateViewId();
      
                }
      
                notifyViewAccessibilityStateChangedIfNeeded(
      
                        AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
      
            }
      
            /**
      
             * Invoked whenever this view loses focus, either by losing window focus or by losing
      
             * focus within its window. This method can be used to clear any state tied to the
      
             * focus. For instance, if a button is held pressed with the trackball and the window
      
             * loses focus, this method can be used to cancel the press.
      
             *
      
             * Subclasses of View overriding this method should always call super.onFocusLost().
      
             *
      
             * @see #onFocusChanged(boolean, int, android.graphics.Rect)
      
             * @see #onWindowFocusChanged(boolean)
      
             *
      
             * @hide pending API council approval
      
             */
      
            @CallSuper
      
            protected void onFocusLost() {
      
                resetPressedState();
      
            }
      
            private void resetPressedState() {
      
                if ((mViewFlags & ENABLED_MASK) == DISABLED) {
      
                    return;
      
                }
      
                if (isPressed()) {
      
                    setPressed(false);
      
                    if (!mHasPerformedLongPress) {
      
                        removeLongPressCallback();
      
                    }
      
                }
      
            }
      
            /**
      
             * Returns true if this view has focus
      
             *
      
             * @return True if this view has focus, false otherwise.
      
             */
      
            @ViewDebug.ExportedProperty(category = "focus")
      
            public boolean isFocused() {
      
                return (mPrivateFlags & PFLAG_FOCUSED) != 0;
      
            }
      
            /**
      
             * Find the view in the hierarchy rooted at this view that currently has
      
             * focus.
      
             *
      
             * @return The view that currently has focus, or null if no focused view can
      
             *         be found.
      
             */
      
            public View findFocus() {
      
                return (mPrivateFlags & PFLAG_FOCUSED) != 0 ? this : null;
      
            }
      
            /**
      
             * Indicates whether this view is one of the set of scrollable containers in
      
             * its window.
      
             *
      
             * @return whether this view is one of the set of scrollable containers in
      
             * its window
      
             *
      
             * @attr ref android.R.styleable#View_isScrollContainer
      
             */
      
            public boolean isScrollContainer() {
      
                return (mPrivateFlags & PFLAG_SCROLL_CONTAINER_ADDED) != 0;
      
            }
      
            /**
      
             * Change whether this view is one of the set of scrollable containers in
      
             * its window.  This will be used to determine whether the window can
      
             * resize or must pan when a soft input area is open -- scrollable
      
             * containers allow the window to use resize mode since the container
      
             * will appropriately shrink.
      
             *
      
             * @attr ref android.R.styleable#View_isScrollContainer
      
             */
      
            public void setScrollContainer(boolean isScrollContainer) {
      
                if (isScrollContainer) {
      
                    if (mAttachInfo != null && (mPrivateFlags&PFLAG_SCROLL_CONTAINER_ADDED) == 0) {
      
                        mAttachInfo.mScrollContainers.add(this);
      
                        mPrivateFlags |= PFLAG_SCROLL_CONTAINER_ADDED;
      
                    }
      
                    mPrivateFlags |= PFLAG_SCROLL_CONTAINER;
      
                } else {
      
                    if ((mPrivateFlags&PFLAG_SCROLL_CONTAINER_ADDED) != 0) {
      
                        mAttachInfo.mScrollContainers.remove(this);
      
                    }
      
                    mPrivateFlags &= ~(PFLAG_SCROLL_CONTAINER|PFLAG_SCROLL_CONTAINER_ADDED);
      
                }
      
            }
      
            /**
      
             * Returns the quality of the drawing cache.
      
             *
      
             * @return One of {@link #DRAWING_CACHE_QUALITY_AUTO},
      
             *         {@link #DRAWING_CACHE_QUALITY_LOW}, or {@link #DRAWING_CACHE_QUALITY_HIGH}
      
             *
      
             * @see #setDrawingCacheQuality(int)
      
             * @see #setDrawingCacheEnabled(boolean)
      
             * @see #isDrawingCacheEnabled()
      
             *
      
             * @attr ref android.R.styleable#View_drawingCacheQuality
      
             */
      
            @DrawingCacheQuality
      
            public int getDrawingCacheQuality() {
      
                return mViewFlags & DRAWING_CACHE_QUALITY_MASK;
      
            }
      
            /**
      
             * Set the drawing cache quality of this view. This value is used only when the
      
             * drawing cache is enabled
      
             *
      
             * @param quality One of {@link #DRAWING_CACHE_QUALITY_AUTO},
      
             *        {@link #DRAWING_CACHE_QUALITY_LOW}, or {@link #DRAWING_CACHE_QUALITY_HIGH}
      
             *
      
             * @see #getDrawingCacheQuality()
      
             * @see #setDrawingCacheEnabled(boolean)
      
             * @see #isDrawingCacheEnabled()
      
             *
      
             * @attr ref android.R.styleable#View_drawingCacheQuality
      
             */
      
            public void setDrawingCacheQuality(@DrawingCacheQuality int quality) {
      
                setFlags(quality, DRAWING_CACHE_QUALITY_MASK);
      
            }
      
            /**
      
             * Returns whether the screen should remain on, corresponding to the current
      
             * value of {@link #KEEP_SCREEN_ON}.
      
             *
      
             * @return Returns true if {@link #KEEP_SCREEN_ON} is set.
      
             *
      
             * @see #setKeepScreenOn(boolean)
      
             *
      
             * @attr ref android.R.styleable#View_keepScreenOn
      
             */
      
            public boolean getKeepScreenOn() {
      
                return (mViewFlags & KEEP_SCREEN_ON) != 0;
      
            }
      
            /**
      
             * Controls whether the screen should remain on, modifying the
      
             * value of {@link #KEEP_SCREEN_ON}.
      
             *
      
             * @param keepScreenOn Supply true to set {@link #KEEP_SCREEN_ON}.
      
             *
      
             * @see #getKeepScreenOn()
      
             *
      
             * @attr ref android.R.styleable#View_keepScreenOn
      
             */
      
            public void setKeepScreenOn(boolean keepScreenOn) {
      
                setFlags(keepScreenOn ? KEEP_SCREEN_ON : 0, KEEP_SCREEN_ON);
      
            }
      
            /**
      
             * Gets the id of the view to use when the next focus is {@link #FOCUS_LEFT}.
      
             * @return The next focus ID, or {@link #NO_ID} if the framework should decide automatically.
      
             *
      
             * @attr ref android.R.styleable#View_nextFocusLeft
      
             */
      
            public int getNextFocusLeftId() {
      
                return mNextFocusLeftId;
      
            }
      
            /**
      
             * Sets the id of the view to use when the next focus is {@link #FOCUS_LEFT}.
      
             * @param nextFocusLeftId The next focus ID, or {@link #NO_ID} if the framework should
      
             * decide automatically.
      
             *
      
             * @attr ref android.R.styleable#View_nextFocusLeft
      
             */
      
            public void setNextFocusLeftId(int nextFocusLeftId) {
      
                mNextFocusLeftId = nextFocusLeftId;
      
            }
      
            /**
      
             * Gets the id of the view to use when the next focus is {@link #FOCUS_RIGHT}.
      
             * @return The next focus ID, or {@link #NO_ID} if the framework should decide automatically.
      
             *
      
             * @attr ref android.R.styleable#View_nextFocusRight
      
             */
      
            public int getNextFocusRightId() {
      
                return mNextFocusRightId;
      
            }
      
            /**
      
             * Sets the id of the view to use when the next focus is {@link #FOCUS_RIGHT}.
      
             * @param nextFocusRightId The next focus ID, or {@link #NO_ID} if the framework should
      
             * decide automatically.
      
             *
      
             * @attr ref android.R.styleable#View_nextFocusRight
      
             */
      
            public void setNextFocusRightId(int nextFocusRightId) {
      
                mNextFocusRightId = nextFocusRightId;
      
            }
      
            /**
      
             * Gets the id of the view to use when the next focus is {@link #FOCUS_UP}.
      
             * @return The next focus ID, or {@link #NO_ID} if the framework should decide automatically.
      
             *
      
             * @attr ref android.R.styleable#View_nextFocusUp
      
             */
      
            public int getNextFocusUpId() {
      
                return mNextFocusUpId;
      
            }
      
            /**
      
             * Sets the id of the view to use when the next focus is {@link #FOCUS_UP}.
      
             * @param nextFocusUpId The next focus ID, or {@link #NO_ID} if the framework should
      
             * decide automatically.
      
             *
      
             * @attr ref android.R.styleable#View_nextFocusUp
      
             */
      
            public void setNextFocusUpId(int nextFocusUpId) {
      
                mNextFocusUpId = nextFocusUpId;
      
            }
      
            /**
      
             * Gets the id of the view to use when the next focus is {@link #FOCUS_DOWN}.
      
             * @return The next focus ID, or {@link #NO_ID} if the framework should decide automatically.
      
             *
      
             * @attr ref android.R.styleable#View_nextFocusDown
      
             */
      
            public int getNextFocusDownId() {
      
                return mNextFocusDownId;
      
            }
      
            /**
      
             * Sets the id of the view to use when the next focus is {@link #FOCUS_DOWN}.
      
             * @param nextFocusDownId The next focus ID, or {@link #NO_ID} if the framework should
      
             * decide automatically.
      
             *
      
             * @attr ref android.R.styleable#View_nextFocusDown
      
             */
      
            public void setNextFocusDownId(int nextFocusDownId) {
      
                mNextFocusDownId = nextFocusDownId;
      
            }
      
            /**
      
             * Gets the id of the view to use when the next focus is {@link #FOCUS_FORWARD}.
      
             * @return The next focus ID, or {@link #NO_ID} if the framework should decide automatically.
      
             *
      
             * @attr ref android.R.styleable#View_nextFocusForward
      
             */
      
            public int getNextFocusForwardId() {
      
                return mNextFocusForwardId;
      
            }
      
            /**
      
             * Sets the id of the view to use when the next focus is {@link #FOCUS_FORWARD}.
      
             * @param nextFocusForwardId The next focus ID, or {@link #NO_ID} if the framework should
      
             * decide automatically.
      
             *
      
             * @attr ref android.R.styleable#View_nextFocusForward
      
             */
      
            public void setNextFocusForwardId(int nextFocusForwardId) {
      
                mNextFocusForwardId = nextFocusForwardId;
      
            }
      
            /**
      
             * Returns the visibility of this view and all of its ancestors
      
             *
      
             * @return True if this view and all of its ancestors are {@link #VISIBLE}
      
             */
      
            public boolean isShown() {
      
                View current = this;
      
                //noinspection ConstantConditions
      
                do {
      
                    if ((current.mViewFlags & VISIBILITY_MASK) != VISIBLE) {
      
                        return false;
      
                    }
      
                    ViewParent parent = current.mParent;
      
                    if (parent == null) {
      
                        return false; // We are not attached to the view root
      
                    }
      
                    if (!(parent instanceof View)) {
      
                        return true;
      
                    }
      
                    current = (View) parent;
      
                } while (current != null);
      
                return false;
      
            }
      
            /**
      
             * Called by the view hierarchy when the content insets for a window have
      
             * changed, to allow it to adjust its content to fit within those windows.
      
             * The content insets tell you the space that the status bar, input method,
      
             * and other system windows infringe on the application's window.
      
             *
      
             * <p>You do not normally need to deal with this function, since the default
      
             * window decoration given to applications takes care of applying it to the
      
             * content of the window.  If you use {@link #SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN}
      
             * or {@link #SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION} this will not be the case,
      
             * and your content can be placed under those system elements.  You can then
      
             * use this method within your view hierarchy if you have parts of your UI
      
             * which you would like to ensure are not being covered.
      
             *
      
             * <p>The default implementation of this method simply applies the content
      
             * insets to the view's padding, consuming that content (modifying the
      
             * insets to be 0), and returning true.  This behavior is off by default, but can
      
             * be enabled through {@link #setFitsSystemWindows(boolean)}.
      
             *
      
             * <p>This function's traversal down the hierarchy is depth-first.  The same content
      
             * insets object is propagated down the hierarchy, so any changes made to it will
      
             * be seen by all following views (including potentially ones above in
      
             * the hierarchy since this is a depth-first traversal).  The first view
      
             * that returns true will abort the entire traversal.
      
             *
      
             * <p>The default implementation works well for a situation where it is
      
             * used with a container that covers the entire window, allowing it to
      
             * apply the appropriate insets to its content on all edges.  If you need
      
             * a more complicated layout (such as two different views fitting system
      
             * windows, one on the top of the window, and one on the bottom),
      
             * you can override the method and handle the insets however you would like.
      
             * Note that the insets provided by the framework are always relative to the
      
             * far edges of the window, not accounting for the location of the called view
      
             * within that window.  (In fact when this method is called you do not yet know
      
             * where the layout will place the view, as it is done before layout happens.)
      
             *
      
             * <p>Note: unlike many View methods, there is no dispatch phase to this
      
             * call.  If you are overriding it in a ViewGroup and want to allow the
      
             * call to continue to your children, you must be sure to call the super
      
             * implementation.
      
             *
      
             * <p>Here is a sample layout that makes use of fitting system windows
      
             * to have controls for a video view placed inside of the window decorations
      
             * that it hides and shows.  This can be used with code like the second
      
             * sample (video player) shown in {@link #setSystemUiVisibility(int)}.
      
             *
      
             * {@sample development/samples/ApiDemos/res/layout/video_player.xml complete}
      
             *
      
             * @param insets Current content insets of the window.  Prior to
      
             * {@link android.os.Build.VERSION_CODES#JELLY_BEAN} you must not modify
      
             * the insets or else you and Android will be unhappy.
      
             *
      
             * @return {@code true} if this view applied the insets and it should not
      
             * continue propagating further down the hierarchy, {@code false} otherwise.
      
             * @see #getFitsSystemWindows()
      
             * @see #setFitsSystemWindows(boolean)
      
             * @see #setSystemUiVisibility(int)
      
             *
      
             * @deprecated As of API 20 use {@link #dispatchApplyWindowInsets(WindowInsets)} to apply
      
             * insets to views. Views should override {@link #onApplyWindowInsets(WindowInsets)} or use
      
             * {@link #setOnApplyWindowInsetsListener(android.view.View.OnApplyWindowInsetsListener)}
      
             * to implement handling their own insets.
      
             */
      
            protected boolean fitSystemWindows(Rect insets) {
      
                if ((mPrivateFlags3 & PFLAG3_APPLYING_INSETS) == 0) {
      
                    if (insets == null) {
      
                        // Null insets by definition have already been consumed.
      
                        // This call cannot apply insets since there are none to apply,
      
                        // so return false.
      
                        return false;
      
                    }
      
                    // If we're not in the process of dispatching the newer apply insets call,
      
                    // that means we're not in the compatibility path. Dispatch into the newer
      
                    // apply insets path and take things from there.
      
                    try {
      
                        mPrivateFlags3 |= PFLAG3_FITTING_SYSTEM_WINDOWS;
      
                        return dispatchApplyWindowInsets(new WindowInsets(insets)).isConsumed();
      
                    } finally {
      
                        mPrivateFlags3 &= ~PFLAG3_FITTING_SYSTEM_WINDOWS;
      
                    }
      
                } else {
      
                    // We're being called from the newer apply insets path.
      
                    // Perform the standard fallback behavior.
      
                    return fitSystemWindowsInt(insets);
      
                }
      
            }
      
            private boolean fitSystemWindowsInt(Rect insets) {
      
                if ((mViewFlags & FITS_SYSTEM_WINDOWS) == FITS_SYSTEM_WINDOWS) {
      
                    mUserPaddingStart = UNDEFINED_PADDING;
      
                    mUserPaddingEnd = UNDEFINED_PADDING;
      
                    Rect localInsets = sThreadLocal.get();
      
                    if (localInsets == null) {
      
                        localInsets = new Rect();
      
                        sThreadLocal.set(localInsets);
      
                    }
      
                    boolean res = computeFitSystemWindows(insets, localInsets);
      
                    mUserPaddingLeftInitial = localInsets.left;
      
                    mUserPaddingRightInitial = localInsets.right;
      
                    internalSetPadding(localInsets.left, localInsets.top,
      
                            localInsets.right, localInsets.bottom);
      
                    return res;
      
                }
      
                return false;
      
            }
      
            /**
      
             * Called when the view should apply {@link WindowInsets} according to its internal policy.
      
             *
      
             * <p>This method should be overridden by views that wish to apply a policy different from or
      
             * in addition to the default behavior. Clients that wish to force a view subtree
      
             * to apply insets should call {@link #dispatchApplyWindowInsets(WindowInsets)}.</p>
      
             *
      
             * <p>Clients may supply an {@link OnApplyWindowInsetsListener} to a view. If one is set
      
             * it will be called during dispatch instead of this method. The listener may optionally
      
             * call this method from its own implementation if it wishes to apply the view's default
      
             * insets policy in addition to its own.</p>
      
             *
      
             * <p>Implementations of this method should either return the insets parameter unchanged
      
             * or a new {@link WindowInsets} cloned from the supplied insets with any insets consumed
      
             * that this view applied itself. This allows new inset types added in future platform
      
             * versions to pass through existing implementations unchanged without being erroneously
      
             * consumed.</p>
      
             *
      
             * <p>By default if a view's {@link #setFitsSystemWindows(boolean) fitsSystemWindows}
      
             * property is set then the view will consume the system window insets and apply them
      
             * as padding for the view.</p>
      
             *
      
             * @param insets Insets to apply
      
             * @return The supplied insets with any applied insets consumed
      
             */
      
            public WindowInsets onApplyWindowInsets(WindowInsets insets) {
      
                if ((mPrivateFlags3 & PFLAG3_FITTING_SYSTEM_WINDOWS) == 0) {
      
                    // We weren't called from within a direct call to fitSystemWindows,
      
                    // call into it as a fallback in case we're in a class that overrides it
      
                    // and has logic to perform.
      
                    if (fitSystemWindows(insets.getSystemWindowInsets())) {
      
                        return insets.consumeSystemWindowInsets();
      
                    }
      
                } else {
      
                    // We were called from within a direct call to fitSystemWindows.
      
                    if (fitSystemWindowsInt(insets.getSystemWindowInsets())) {
      
                        return insets.consumeSystemWindowInsets();
      
                    }
      
                }
      
                return insets;
      
            }
      
            /**
      
             * Set an {@link OnApplyWindowInsetsListener} to take over the policy for applying
      
             * window insets to this view. The listener's
      
             * {@link OnApplyWindowInsetsListener#onApplyWindowInsets(View, WindowInsets) onApplyWindowInsets}
      
             * method will be called instead of the view's
      
             * {@link #onApplyWindowInsets(WindowInsets) onApplyWindowInsets} method.
      
             *
      
             * @param listener Listener to set
      
             *
      
             * @see #onApplyWindowInsets(WindowInsets)
      
             */
      
            public void setOnApplyWindowInsetsListener(OnApplyWindowInsetsListener listener) {
      
                getListenerInfo().mOnApplyWindowInsetsListener = listener;
      
            }
      
            /**
      
             * Request to apply the given window insets to this view or another view in its subtree.
      
             *
      
             * <p>This method should be called by clients wishing to apply insets corresponding to areas
      
             * obscured by window decorations or overlays. This can include the status and navigation bars,
      
             * action bars, input methods and more. New inset categories may be added in the future.
      
             * The method returns the insets provided minus any that were applied by this view or its
      
             * children.</p>
      
             *
      
             * <p>Clients wishing to provide custom behavior should override the
      
             * {@link #onApplyWindowInsets(WindowInsets)} method or alternatively provide a
      
             * {@link OnApplyWindowInsetsListener} via the
      
             * {@link #setOnApplyWindowInsetsListener(View.OnApplyWindowInsetsListener) setOnApplyWindowInsetsListener}
      
             * method.</p>
      
             *
      
             * <p>This method replaces the older {@link #fitSystemWindows(Rect) fitSystemWindows} method.
      
             * </p>
      
             *
      
             * @param insets Insets to apply
      
             * @return The provided insets minus the insets that were consumed
      
             */
      
            public WindowInsets dispatchApplyWindowInsets(WindowInsets insets) {
      
                try {
      
                    mPrivateFlags3 |= PFLAG3_APPLYING_INSETS;
      
                    if (mListenerInfo != null && mListenerInfo.mOnApplyWindowInsetsListener != null) {
      
                        return mListenerInfo.mOnApplyWindowInsetsListener.onApplyWindowInsets(this, insets);
      
                    } else {
      
                        return onApplyWindowInsets(insets);
      
                    }
      
                } finally {
      
                    mPrivateFlags3 &= ~PFLAG3_APPLYING_INSETS;
      
                }
      
            }
      
            /**
      
             * Provide original WindowInsets that are dispatched to the view hierarchy. The insets are
      
             * only available if the view is attached.
      
             *
      
             * @return WindowInsets from the top of the view hierarchy or null if View is detached
      
             */
      
            public WindowInsets getRootWindowInsets() {
      
                if (mAttachInfo != null) {
      
                    return mAttachInfo.mViewRootImpl.getWindowInsets(false /* forceConstruct */);
      
                }
      
                return null;
      
            }
      
            /**
      
             * @hide Compute the insets that should be consumed by this view and the ones
      
             * that should propagate to those under it.
      
             */
      
            protected boolean computeFitSystemWindows(Rect inoutInsets, Rect outLocalInsets) {
      
                if ((mViewFlags & OPTIONAL_FITS_SYSTEM_WINDOWS) == 0
      
                        || mAttachInfo == null
      
                        || ((mAttachInfo.mSystemUiVisibility & SYSTEM_UI_LAYOUT_FLAGS) == 0
      
                                && !mAttachInfo.mOverscanRequested)) {
      
                    outLocalInsets.set(inoutInsets);
      
                    inoutInsets.set(0, 0, 0, 0);
      
                    return true;
      
                } else {
      
                    // The application wants to take care of fitting system window for
      
                    // the content...  however we still need to take care of any overscan here.
      
                    final Rect overscan = mAttachInfo.mOverscanInsets;
      
                    outLocalInsets.set(overscan);
      
                    inoutInsets.left -= overscan.left;
      
                    inoutInsets.top -= overscan.top;
      
                    inoutInsets.right -= overscan.right;
      
                    inoutInsets.bottom -= overscan.bottom;
      
                    return false;
      
                }
      
            }
      
            /**
      
             * Compute insets that should be consumed by this view and the ones that should propagate
      
             * to those under it.
      
             *
      
             * @param in Insets currently being processed by this View, likely received as a parameter
      
             *           to {@link #onApplyWindowInsets(WindowInsets)}.
      
             * @param outLocalInsets A Rect that will receive the insets that should be consumed
      
             *                       by this view
      
             * @return Insets that should be passed along to views under this one
      
             */
      
            public WindowInsets computeSystemWindowInsets(WindowInsets in, Rect outLocalInsets) {
      
                if ((mViewFlags & OPTIONAL_FITS_SYSTEM_WINDOWS) == 0
      
                        || mAttachInfo == null
      
                        || (mAttachInfo.mSystemUiVisibility & SYSTEM_UI_LAYOUT_FLAGS) == 0) {
      
                    outLocalInsets.set(in.getSystemWindowInsets());
      
                    return in.consumeSystemWindowInsets();
      
                } else {
      
                    outLocalInsets.set(0, 0, 0, 0);
      
                    return in;
      
                }
      
            }
      
            /**
      
             * Sets whether or not this view should account for system screen decorations
      
             * such as the status bar and inset its content; that is, controlling whether
      
             * the default implementation of {@link #fitSystemWindows(Rect)} will be
      
             * executed.  See that method for more details.
      
             *
      
             * <p>Note that if you are providing your own implementation of
      
             * {@link #fitSystemWindows(Rect)}, then there is no need to set this
      
             * flag to true -- your implementation will be overriding the default
      
             * implementation that checks this flag.
      
             *
      
             * @param fitSystemWindows If true, then the default implementation of
      
             * {@link #fitSystemWindows(Rect)} will be executed.
      
             *
      
             * @attr ref android.R.styleable#View_fitsSystemWindows
      
             * @see #getFitsSystemWindows()
      
             * @see #fitSystemWindows(Rect)
      
             * @see #setSystemUiVisibility(int)
      
             */
      
            public void setFitsSystemWindows(boolean fitSystemWindows) {
      
                setFlags(fitSystemWindows ? FITS_SYSTEM_WINDOWS : 0, FITS_SYSTEM_WINDOWS);
      
            }
      
            /**
      
             * Check for state of {@link #setFitsSystemWindows(boolean)}. If this method
      
             * returns {@code true}, the default implementation of {@link #fitSystemWindows(Rect)}
      
             * will be executed.
      
             *
      
             * @return {@code true} if the default implementation of
      
             * {@link #fitSystemWindows(Rect)} will be executed.
      
             *
      
             * @attr ref android.R.styleable#View_fitsSystemWindows
      
             * @see #setFitsSystemWindows(boolean)
      
             * @see #fitSystemWindows(Rect)
      
             * @see #setSystemUiVisibility(int)
      
             */
      
            @ViewDebug.ExportedProperty
      
            public boolean getFitsSystemWindows() {
      
                return (mViewFlags & FITS_SYSTEM_WINDOWS) == FITS_SYSTEM_WINDOWS;
      
            }
      
            /** @hide */
      
            public boolean fitsSystemWindows() {
      
                return getFitsSystemWindows();
      
            }
      
            /**
      
             * Ask that a new dispatch of {@link #fitSystemWindows(Rect)} be performed.
      
             * @deprecated Use {@link #requestApplyInsets()} for newer platform versions.
      
             */
      
            public void requestFitSystemWindows() {
      
                if (mParent != null) {
      
                    mParent.requestFitSystemWindows();
      
                }
      
            }
      
            /**
      
             * Ask that a new dispatch of {@link #onApplyWindowInsets(WindowInsets)} be performed.
      
             */
      
            public void requestApplyInsets() {
      
                requestFitSystemWindows();
      
            }
      
            /**
      
             * For use by PhoneWindow to make its own system window fitting optional.
      
             * @hide
      
             */
      
            public void makeOptionalFitsSystemWindows() {
      
                setFlags(OPTIONAL_FITS_SYSTEM_WINDOWS, OPTIONAL_FITS_SYSTEM_WINDOWS);
      
            }
      
            /**
      
             * Returns the outsets, which areas of the device that aren't a surface, but we would like to
      
             * treat them as such.
      
             * @hide
      
             */
      
            public void getOutsets(Rect outOutsetRect) {
      
                if (mAttachInfo != null) {
      
                    outOutsetRect.set(mAttachInfo.mOutsets);
      
                } else {
      
                    outOutsetRect.setEmpty();
      
                }
      
            }
      
            /**
      
             * Returns the visibility status for this view.
      
             *
      
             * @return One of {@link #VISIBLE}, {@link #INVISIBLE}, or {@link #GONE}.
      
             * @attr ref android.R.styleable#View_visibility
      
             */
      
            @ViewDebug.ExportedProperty(mapping = {
      
                @ViewDebug.IntToString(from = VISIBLE,   to = "VISIBLE"),
      
                @ViewDebug.IntToString(from = INVISIBLE, to = "INVISIBLE"),
      
                @ViewDebug.IntToString(from = GONE,      to = "GONE")
      
            })
      
            @Visibility
      
            public int getVisibility() {
      
                return mViewFlags & VISIBILITY_MASK;
      
            }
      
            /**
      
             * Set the enabled state of this view.
      
             *
      
             * @param visibility One of {@link #VISIBLE}, {@link #INVISIBLE}, or {@link #GONE}.
      
             * @attr ref android.R.styleable#View_visibility
      
             */
      
            @RemotableViewMethod
      
            public void setVisibility(@Visibility int visibility) {
      
                setFlags(visibility, VISIBILITY_MASK);
      
            }
      
            /**
      
             * Returns the enabled status for this view. The interpretation of the
      
             * enabled state varies by subclass.
      
             *
      
             * @return True if this view is enabled, false otherwise.
      
             */
      
            @ViewDebug.ExportedProperty
      
            public boolean isEnabled() {
      
                return (mViewFlags & ENABLED_MASK) == ENABLED;
      
            }
      
            /**
      
             * Set the enabled state of this view. The interpretation of the enabled
      
             * state varies by subclass.
      
             *
      
             * @param enabled True if this view is enabled, false otherwise.
      
             */
      
            @RemotableViewMethod
      
            public void setEnabled(boolean enabled) {
      
                if (enabled == isEnabled()) return;
      
                setFlags(enabled ? ENABLED : DISABLED, ENABLED_MASK);
      
                /*
      
                 * The View most likely has to change its appearance, so refresh
      
                 * the drawable state.
      
                 */
      
                refreshDrawableState();
      
                // Invalidate too, since the default behavior for views is to be
      
                // be drawn at 50% alpha rather than to change the drawable.
      
                invalidate(true);
      
                if (!enabled) {
      
                    cancelPendingInputEvents();
      
                }
      
            }
      
            /**
      
             * Set whether this view can receive the focus.
      
             *
      
             * Setting this to false will also ensure that this view is not focusable
      
             * in touch mode.
      
             *
      
             * @param focusable If true, this view can receive the focus.
      
             *
      
             * @see #setFocusableInTouchMode(boolean)
      
             * @attr ref android.R.styleable#View_focusable
      
             */
      
            public void setFocusable(boolean focusable) {
      
                if (!focusable) {
      
                    setFlags(0, FOCUSABLE_IN_TOUCH_MODE);
      
                }
      
                setFlags(focusable ? FOCUSABLE : NOT_FOCUSABLE, FOCUSABLE_MASK);
      
            }
      
            /**
      
             * Set whether this view can receive focus while in touch mode.
      
             *
      
             * Setting this to true will also ensure that this view is focusable.
      
             *
      
             * @param focusableInTouchMode If true, this view can receive the focus while
      
             *   in touch mode.
      
             *
      
             * @see #setFocusable(boolean)
      
             * @attr ref android.R.styleable#View_focusableInTouchMode
      
             */
      
            public void setFocusableInTouchMode(boolean focusableInTouchMode) {
      
                // Focusable in touch mode should always be set before the focusable flag
      
                // otherwise, setting the focusable flag will trigger a focusableViewAvailable()
      
                // which, in touch mode, will not successfully request focus on this view
      
                // because the focusable in touch mode flag is not set
      
                setFlags(focusableInTouchMode ? FOCUSABLE_IN_TOUCH_MODE : 0, FOCUSABLE_IN_TOUCH_MODE);
      
                if (focusableInTouchMode) {
      
                    setFlags(FOCUSABLE, FOCUSABLE_MASK);
      
                }
      
            }
      
            /**
      
             * Set whether this view should have sound effects enabled for events such as
      
             * clicking and touching.
      
             *
      
             * <p>You may wish to disable sound effects for a view if you already play sounds,
      
             * for instance, a dial key that plays dtmf tones.
      
             *
      
             * @param soundEffectsEnabled whether sound effects are enabled for this view.
      
             * @see #isSoundEffectsEnabled()
      
             * @see #playSoundEffect(int)
      
             * @attr ref android.R.styleable#View_soundEffectsEnabled
      
             */
      
            public void setSoundEffectsEnabled(boolean soundEffectsEnabled) {
      
                setFlags(soundEffectsEnabled ? SOUND_EFFECTS_ENABLED: 0, SOUND_EFFECTS_ENABLED);
      
            }
      
            /**
      
             * @return whether this view should have sound effects enabled for events such as
      
             *     clicking and touching.
      
             *
      
             * @see #setSoundEffectsEnabled(boolean)
      
             * @see #playSoundEffect(int)
      
             * @attr ref android.R.styleable#View_soundEffectsEnabled
      
             */
      
            @ViewDebug.ExportedProperty
      
            public boolean isSoundEffectsEnabled() {
      
                return SOUND_EFFECTS_ENABLED == (mViewFlags & SOUND_EFFECTS_ENABLED);
      
            }
      
            /**
      
             * Set whether this view should have haptic feedback for events such as
      
             * long presses.
      
             *
      
             * <p>You may wish to disable haptic feedback if your view already controls
      
             * its own haptic feedback.
      
             *
      
             * @param hapticFeedbackEnabled whether haptic feedback enabled for this view.
      
             * @see #isHapticFeedbackEnabled()
      
             * @see #performHapticFeedback(int)
      
             * @attr ref android.R.styleable#View_hapticFeedbackEnabled
      
             */
      
            public void setHapticFeedbackEnabled(boolean hapticFeedbackEnabled) {
      
                setFlags(hapticFeedbackEnabled ? HAPTIC_FEEDBACK_ENABLED: 0, HAPTIC_FEEDBACK_ENABLED);
      
            }
      
            /**
      
             * @return whether this view should have haptic feedback enabled for events
      
             * long presses.
      
             *
      
             * @see #setHapticFeedbackEnabled(boolean)
      
             * @see #performHapticFeedback(int)
      
             * @attr ref android.R.styleable#View_hapticFeedbackEnabled
      
             */
      
            @ViewDebug.ExportedProperty
      
            public boolean isHapticFeedbackEnabled() {
      
                return HAPTIC_FEEDBACK_ENABLED == (mViewFlags & HAPTIC_FEEDBACK_ENABLED);
      
            }
      
            /**
      
             * Returns the layout direction for this view.
      
             *
      
             * @return One of {@link #LAYOUT_DIRECTION_LTR},
      
             *   {@link #LAYOUT_DIRECTION_RTL},
      
             *   {@link #LAYOUT_DIRECTION_INHERIT} or
      
             *   {@link #LAYOUT_DIRECTION_LOCALE}.
      
             *
      
             * @attr ref android.R.styleable#View_layoutDirection
      
             *
      
             * @hide
      
             */
      
            @ViewDebug.ExportedProperty(category = "layout", mapping = {
      
                @ViewDebug.IntToString(from = LAYOUT_DIRECTION_LTR,     to = "LTR"),
      
                @ViewDebug.IntToString(from = LAYOUT_DIRECTION_RTL,     to = "RTL"),
      
                @ViewDebug.IntToString(from = LAYOUT_DIRECTION_INHERIT, to = "INHERIT"),
      
                @ViewDebug.IntToString(from = LAYOUT_DIRECTION_LOCALE,  to = "LOCALE")
      
            })
      
            @LayoutDir
      
            public int getRawLayoutDirection() {
      
                return (mPrivateFlags2 & PFLAG2_LAYOUT_DIRECTION_MASK) >> PFLAG2_LAYOUT_DIRECTION_MASK_SHIFT;
      
            }
      
            /**
      
             * Set the layout direction for this view. This will propagate a reset of layout direction
      
             * resolution to the view's children and resolve layout direction for this view.
      
             *
      
             * @param layoutDirection the layout direction to set. Should be one of:
      
             *
      
             * {@link #LAYOUT_DIRECTION_LTR},
      
             * {@link #LAYOUT_DIRECTION_RTL},
      
             * {@link #LAYOUT_DIRECTION_INHERIT},
      
             * {@link #LAYOUT_DIRECTION_LOCALE}.
      
             *
      
             * Resolution will be done if the value is set to LAYOUT_DIRECTION_INHERIT. The resolution
      
             * proceeds up the parent chain of the view to get the value. If there is no parent, then it
      
             * will return the default {@link #LAYOUT_DIRECTION_LTR}.
      
             *
      
             * @attr ref android.R.styleable#View_layoutDirection
      
             */
      
            @RemotableViewMethod
      
            public void setLayoutDirection(@LayoutDir int layoutDirection) {
      
                if (getRawLayoutDirection() != layoutDirection) {
      
                    // Reset the current layout direction and the resolved one
      
                    mPrivateFlags2 &= ~PFLAG2_LAYOUT_DIRECTION_MASK;
      
                    resetRtlProperties();
      
                    // Set the new layout direction (filtered)
      
                    mPrivateFlags2 |=
      
                            ((layoutDirection << PFLAG2_LAYOUT_DIRECTION_MASK_SHIFT) & PFLAG2_LAYOUT_DIRECTION_MASK);
      
                    // We need to resolve all RTL properties as they all depend on layout direction
      
                    resolveRtlPropertiesIfNeeded();
      
                    requestLayout();
      
                    invalidate(true);
      
                }
      
            }
      
            /**
      
             * Returns the resolved layout direction for this view.
      
             *
      
             * @return {@link #LAYOUT_DIRECTION_RTL} if the layout direction is RTL or returns
      
             * {@link #LAYOUT_DIRECTION_LTR} if the layout direction is not RTL.
      
             *
      
             * For compatibility, this will return {@link #LAYOUT_DIRECTION_LTR} if API version
      
             * is lower than {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1}.
      
             *
      
             * @attr ref android.R.styleable#View_layoutDirection
      
             */
      
            @ViewDebug.ExportedProperty(category = "layout", mapping = {
      
                @ViewDebug.IntToString(from = LAYOUT_DIRECTION_LTR, to = "RESOLVED_DIRECTION_LTR"),
      
                @ViewDebug.IntToString(from = LAYOUT_DIRECTION_RTL, to = "RESOLVED_DIRECTION_RTL")
      
            })
      
            @ResolvedLayoutDir
      
            public int getLayoutDirection() {
      
                final int targetSdkVersion = getContext().getApplicationInfo().targetSdkVersion;
      
                if (targetSdkVersion < JELLY_BEAN_MR1) {
      
                    mPrivateFlags2 |= PFLAG2_LAYOUT_DIRECTION_RESOLVED;
      
                    return LAYOUT_DIRECTION_RESOLVED_DEFAULT;
      
                }
      
                return ((mPrivateFlags2 & PFLAG2_LAYOUT_DIRECTION_RESOLVED_RTL) ==
      
                        PFLAG2_LAYOUT_DIRECTION_RESOLVED_RTL) ? LAYOUT_DIRECTION_RTL : LAYOUT_DIRECTION_LTR;
      
            }
      
            /**
      
             * Indicates whether or not this view's layout is right-to-left. This is resolved from
      
             * layout attribute and/or the inherited value from the parent
      
             *
      
             * @return true if the layout is right-to-left.
      
             *
      
             * @hide
      
             */
      
            @ViewDebug.ExportedProperty(category = "layout")
      
            public boolean isLayoutRtl() {
      
                return (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
      
            }
      
            /**
      
             * Indicates whether the view is currently tracking transient state that the
      
             * app should not need to concern itself with saving and restoring, but that
      
             * the framework should take special note to preserve when possible.
      
             *
      
             * <p>A view with transient state cannot be trivially rebound from an external
      
             * data source, such as an adapter binding item views in a list. This may be
      
             * because the view is performing an animation, tracking user selection
      
             * of content, or similar.</p>
      
             *
      
             * @return true if the view has transient state
      
             */
      
            @ViewDebug.ExportedProperty(category = "layout")
      
            public boolean hasTransientState() {
      
                return (mPrivateFlags2 & PFLAG2_HAS_TRANSIENT_STATE) == PFLAG2_HAS_TRANSIENT_STATE;
      
            }
      
            /**
      
             * Set whether this view is currently tracking transient state that the
      
             * framework should attempt to preserve when possible. This flag is reference counted,
      
             * so every call to setHasTransientState(true) should be paired with a later call
      
             * to setHasTransientState(false).
      
             *
      
             * <p>A view with transient state cannot be trivially rebound from an external
      
             * data source, such as an adapter binding item views in a list. This may be
      
             * because the view is performing an animation, tracking user selection
      
             * of content, or similar.</p>
      
             *
      
             * @param hasTransientState true if this view has transient state
      
             */
      
            public void setHasTransientState(boolean hasTransientState) {
      
                mTransientStateCount = hasTransientState ? mTransientStateCount + 1 :
      
                        mTransientStateCount - 1;
      
                if (mTransientStateCount < 0) {
      
                    mTransientStateCount = 0;
      
                    Log.e(VIEW_LOG_TAG, "hasTransientState decremented below 0: " +
      
                            "unmatched pair of setHasTransientState calls");
      
                } else if ((hasTransientState && mTransientStateCount == 1) ||
      
                        (!hasTransientState && mTransientStateCount == 0)) {
      
                    // update flag if we've just incremented up from 0 or decremented down to 0
      
                    mPrivateFlags2 = (mPrivateFlags2 & ~PFLAG2_HAS_TRANSIENT_STATE) |
      
                            (hasTransientState ? PFLAG2_HAS_TRANSIENT_STATE : 0);
      
                    if (mParent != null) {
      
                        try {
      
                            mParent.childHasTransientStateChanged(this, hasTransientState);
      
                        } catch (AbstractMethodError e) {
      
                            Log.e(VIEW_LOG_TAG, mParent.getClass().getSimpleName() +
      
                                    " does not fully implement ViewParent", e);
      
                        }
      
                    }
      
                }
      
            }
      
            /**
      
             * Returns true if this view is currently attached to a window.
      
             */
      
            public boolean isAttachedToWindow() {
      
                return mAttachInfo != null;
      
            }
      
            /**
      
             * Returns true if this view has been through at least one layout since it
      
             * was last attached to or detached from a window.
      
             */
      
            public boolean isLaidOut() {
      
                return (mPrivateFlags3 & PFLAG3_IS_LAID_OUT) == PFLAG3_IS_LAID_OUT;
      
            }
      
            /**
      
             * If this view doesn't do any drawing on its own, set this flag to
      
             * allow further optimizations. By default, this flag is not set on
      
             * View, but could be set on some View subclasses such as ViewGroup.
      
             *
      
             * Typically, if you override {@link #onDraw(android.graphics.Canvas)}
      
             * you should clear this flag.
      
             *
      
             * @param willNotDraw whether or not this View draw on its own
      
             */
      
            public void setWillNotDraw(boolean willNotDraw) {
      
                setFlags(willNotDraw ? WILL_NOT_DRAW : 0, DRAW_MASK);
      
            }
      
            /**
      
             * Returns whether or not this View draws on its own.
      
             *
      
             * @return true if this view has nothing to draw, false otherwise
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public boolean willNotDraw() {
      
                return (mViewFlags & DRAW_MASK) == WILL_NOT_DRAW;
      
            }
      
            /**
      
             * When a View's drawing cache is enabled, drawing is redirected to an
      
             * offscreen bitmap. Some views, like an ImageView, must be able to
      
             * bypass this mechanism if they already draw a single bitmap, to avoid
      
             * unnecessary usage of the memory.
      
             *
      
             * @param willNotCacheDrawing true if this view does not cache its
      
             *        drawing, false otherwise
      
             */
      
            public void setWillNotCacheDrawing(boolean willNotCacheDrawing) {
      
                setFlags(willNotCacheDrawing ? WILL_NOT_CACHE_DRAWING : 0, WILL_NOT_CACHE_DRAWING);
      
            }
      
            /**
      
             * Returns whether or not this View can cache its drawing or not.
      
             *
      
             * @return true if this view does not cache its drawing, false otherwise
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public boolean willNotCacheDrawing() {
      
                return (mViewFlags & WILL_NOT_CACHE_DRAWING) == WILL_NOT_CACHE_DRAWING;
      
            }
      
            /**
      
             * Indicates whether this view reacts to click events or not.
      
             *
      
             * @return true if the view is clickable, false otherwise
      
             *
      
             * @see #setClickable(boolean)
      
             * @attr ref android.R.styleable#View_clickable
      
             */
      
            @ViewDebug.ExportedProperty
      
            public boolean isClickable() {
      
                return (mViewFlags & CLICKABLE) == CLICKABLE;
      
            }
      
            /**
      
             * Enables or disables click events for this view. When a view
      
             * is clickable it will change its state to "pressed" on every click.
      
             * Subclasses should set the view clickable to visually react to
      
             * user's clicks.
      
             *
      
             * @param clickable true to make the view clickable, false otherwise
      
             *
      
             * @see #isClickable()
      
             * @attr ref android.R.styleable#View_clickable
      
             */
      
            public void setClickable(boolean clickable) {
      
                setFlags(clickable ? CLICKABLE : 0, CLICKABLE);
      
            }
      
            /**
      
             * Indicates whether this view reacts to long click events or not.
      
             *
      
             * @return true if the view is long clickable, false otherwise
      
             *
      
             * @see #setLongClickable(boolean)
      
             * @attr ref android.R.styleable#View_longClickable
      
             */
      
            public boolean isLongClickable() {
      
                return (mViewFlags & LONG_CLICKABLE) == LONG_CLICKABLE;
      
            }
      
            /**
      
             * Enables or disables long click events for this view. When a view is long
      
             * clickable it reacts to the user holding down the button for a longer
      
             * duration than a tap. This event can either launch the listener or a
      
             * context menu.
      
             *
      
             * @param longClickable true to make the view long clickable, false otherwise
      
             * @see #isLongClickable()
      
             * @attr ref android.R.styleable#View_longClickable
      
             */
      
            public void setLongClickable(boolean longClickable) {
      
                setFlags(longClickable ? LONG_CLICKABLE : 0, LONG_CLICKABLE);
      
            }
      
            /**
      
             * Indicates whether this view reacts to context clicks or not.
      
             *
      
             * @return true if the view is context clickable, false otherwise
      
             * @see #setContextClickable(boolean)
      
             * @attr ref android.R.styleable#View_contextClickable
      
             */
      
            public boolean isContextClickable() {
      
                return (mViewFlags & CONTEXT_CLICKABLE) == CONTEXT_CLICKABLE;
      
            }
      
            /**
      
             * Enables or disables context clicking for this view. This event can launch the listener.
      
             *
      
             * @param contextClickable true to make the view react to a context click, false otherwise
      
             * @see #isContextClickable()
      
             * @attr ref android.R.styleable#View_contextClickable
      
             */
      
            public void setContextClickable(boolean contextClickable) {
      
                setFlags(contextClickable ? CONTEXT_CLICKABLE : 0, CONTEXT_CLICKABLE);
      
            }
      
            /**
      
             * Sets the pressed state for this view and provides a touch coordinate for
      
             * animation hinting.
      
             *
      
             * @param pressed Pass true to set the View's internal state to "pressed",
      
             *            or false to reverts the View's internal state from a
      
             *            previously set "pressed" state.
      
             * @param x The x coordinate of the touch that caused the press
      
             * @param y The y coordinate of the touch that caused the press
      
             */
      
            private void setPressed(boolean pressed, float x, float y) {
      
                if (pressed) {
      
                    drawableHotspotChanged(x, y);
      
                }
      
                setPressed(pressed);
      
            }
      
            /**
      
             * Sets the pressed state for this view.
      
             *
      
             * @see #isClickable()
      
             * @see #setClickable(boolean)
      
             *
      
             * @param pressed Pass true to set the View's internal state to "pressed", or false to reverts
      
             *        the View's internal state from a previously set "pressed" state.
      
             */
      
            public void setPressed(boolean pressed) {
      
                final boolean needsRefresh = pressed != ((mPrivateFlags & PFLAG_PRESSED) == PFLAG_PRESSED);
      
                if (pressed) {
      
                    mPrivateFlags |= PFLAG_PRESSED;
      
                } else {
      
                    mPrivateFlags &= ~PFLAG_PRESSED;
      
                }
      
                if (needsRefresh) {
      
                    refreshDrawableState();
      
                }
      
                dispatchSetPressed(pressed);
      
            }
      
            /**
      
             * Dispatch setPressed to all of this View's children.
      
             *
      
             * @see #setPressed(boolean)
      
             *
      
             * @param pressed The new pressed state
      
             */
      
            protected void dispatchSetPressed(boolean pressed) {
      
            }
      
            /**
      
             * Indicates whether the view is currently in pressed state. Unless
      
             * {@link #setPressed(boolean)} is explicitly called, only clickable views can enter
      
             * the pressed state.
      
             *
      
             * @see #setPressed(boolean)
      
             * @see #isClickable()
      
             * @see #setClickable(boolean)
      
             *
      
             * @return true if the view is currently pressed, false otherwise
      
             */
      
            @ViewDebug.ExportedProperty
      
            public boolean isPressed() {
      
                return (mPrivateFlags & PFLAG_PRESSED) == PFLAG_PRESSED;
      
            }
      
            /**
      
             * @hide
      
             * Indicates whether this view will participate in data collection through
      
             * {@link ViewStructure}.  If true, it will not provide any data
      
             * for itself or its children.  If false, the normal data collection will be allowed.
      
             *
      
             * @return Returns false if assist data collection is not blocked, else true.
      
             *
      
             * @see #setAssistBlocked(boolean)
      
             * @attr ref android.R.styleable#View_assistBlocked
      
             */
      
            public boolean isAssistBlocked() {
      
                return (mPrivateFlags3 & PFLAG3_ASSIST_BLOCKED) != 0;
      
            }
      
            /**
      
             * @hide
      
             * Controls whether assist data collection from this view and its children is enabled
      
             * (that is, whether {@link #onProvideStructure} and
      
             * {@link #onProvideVirtualStructure} will be called).  The default value is false,
      
             * allowing normal assist collection.  Setting this to false will disable assist collection.
      
             *
      
             * @param enabled Set to true to <em>disable</em> assist data collection, or false
      
             * (the default) to allow it.
      
             *
      
             * @see #isAssistBlocked()
      
             * @see #onProvideStructure
      
             * @see #onProvideVirtualStructure
      
             * @attr ref android.R.styleable#View_assistBlocked
      
             */
      
            public void setAssistBlocked(boolean enabled) {
      
                if (enabled) {
      
                    mPrivateFlags3 |= PFLAG3_ASSIST_BLOCKED;
      
                } else {
      
                    mPrivateFlags3 &= ~PFLAG3_ASSIST_BLOCKED;
      
                }
      
            }
      
            /**
      
             * Indicates whether this view will save its state (that is,
      
             * whether its {@link #onSaveInstanceState} method will be called).
      
             *
      
             * @return Returns true if the view state saving is enabled, else false.
      
             *
      
             * @see #setSaveEnabled(boolean)
      
             * @attr ref android.R.styleable#View_saveEnabled
      
             */
      
            public boolean isSaveEnabled() {
      
                return (mViewFlags & SAVE_DISABLED_MASK) != SAVE_DISABLED;
      
            }
      
            /**
      
             * Controls whether the saving of this view's state is
      
             * enabled (that is, whether its {@link #onSaveInstanceState} method
      
             * will be called).  Note that even if freezing is enabled, the
      
             * view still must have an id assigned to it (via {@link #setId(int)})
      
             * for its state to be saved.  This flag can only disable the
      
             * saving of this view; any child views may still have their state saved.
      
             *
      
             * @param enabled Set to false to <em>disable</em> state saving, or true
      
             * (the default) to allow it.
      
             *
      
             * @see #isSaveEnabled()
      
             * @see #setId(int)
      
             * @see #onSaveInstanceState()
      
             * @attr ref android.R.styleable#View_saveEnabled
      
             */
      
            public void setSaveEnabled(boolean enabled) {
      
                setFlags(enabled ? 0 : SAVE_DISABLED, SAVE_DISABLED_MASK);
      
            }
      
            /**
      
             * Gets whether the framework should discard touches when the view's
      
             * window is obscured by another visible window.
      
             * Refer to the {@link View} security documentation for more details.
      
             *
      
             * @return True if touch filtering is enabled.
      
             *
      
             * @see #setFilterTouchesWhenObscured(boolean)
      
             * @attr ref android.R.styleable#View_filterTouchesWhenObscured
      
             */
      
            @ViewDebug.ExportedProperty
      
            public boolean getFilterTouchesWhenObscured() {
      
                return (mViewFlags & FILTER_TOUCHES_WHEN_OBSCURED) != 0;
      
            }
      
            /**
      
             * Sets whether the framework should discard touches when the view's
      
             * window is obscured by another visible window.
      
             * Refer to the {@link View} security documentation for more details.
      
             *
      
             * @param enabled True if touch filtering should be enabled.
      
             *
      
             * @see #getFilterTouchesWhenObscured
      
             * @attr ref android.R.styleable#View_filterTouchesWhenObscured
      
             */
      
            public void setFilterTouchesWhenObscured(boolean enabled) {
      
                setFlags(enabled ? FILTER_TOUCHES_WHEN_OBSCURED : 0,
      
                        FILTER_TOUCHES_WHEN_OBSCURED);
      
            }
      
            /**
      
             * Indicates whether the entire hierarchy under this view will save its
      
             * state when a state saving traversal occurs from its parent.  The default
      
             * is true; if false, these views will not be saved unless
      
             * {@link #saveHierarchyState(SparseArray)} is called directly on this view.
      
             *
      
             * @return Returns true if the view state saving from parent is enabled, else false.
      
             *
      
             * @see #setSaveFromParentEnabled(boolean)
      
             */
      
            public boolean isSaveFromParentEnabled() {
      
                return (mViewFlags & PARENT_SAVE_DISABLED_MASK) != PARENT_SAVE_DISABLED;
      
            }
      
            /**
      
             * Controls whether the entire hierarchy under this view will save its
      
             * state when a state saving traversal occurs from its parent.  The default
      
             * is true; if false, these views will not be saved unless
      
             * {@link #saveHierarchyState(SparseArray)} is called directly on this view.
      
             *
      
             * @param enabled Set to false to <em>disable</em> state saving, or true
      
             * (the default) to allow it.
      
             *
      
             * @see #isSaveFromParentEnabled()
      
             * @see #setId(int)
      
             * @see #onSaveInstanceState()
      
             */
      
            public void setSaveFromParentEnabled(boolean enabled) {
      
                setFlags(enabled ? 0 : PARENT_SAVE_DISABLED, PARENT_SAVE_DISABLED_MASK);
      
            }
      
            /**
      
             * Returns whether this View is able to take focus.
      
             *
      
             * @return True if this view can take focus, or false otherwise.
      
             * @attr ref android.R.styleable#View_focusable
      
             */
      
            @ViewDebug.ExportedProperty(category = "focus")
      
            public final boolean isFocusable() {
      
                return FOCUSABLE == (mViewFlags & FOCUSABLE_MASK);
      
            }
      
            /**
      
             * When a view is focusable, it may not want to take focus when in touch mode.
      
             * For example, a button would like focus when the user is navigating via a D-pad
      
             * so that the user can click on it, but once the user starts touching the screen,
      
             * the button shouldn't take focus
      
             * @return Whether the view is focusable in touch mode.
      
             * @attr ref android.R.styleable#View_focusableInTouchMode
      
             */
      
            @ViewDebug.ExportedProperty
      
            public final boolean isFocusableInTouchMode() {
      
                return FOCUSABLE_IN_TOUCH_MODE == (mViewFlags & FOCUSABLE_IN_TOUCH_MODE);
      
            }
      
            /**
      
             * Find the nearest view in the specified direction that can take focus.
      
             * This does not actually give focus to that view.
      
             *
      
             * @param direction One of FOCUS_UP, FOCUS_DOWN, FOCUS_LEFT, and FOCUS_RIGHT
      
             *
      
             * @return The nearest focusable in the specified direction, or null if none
      
             *         can be found.
      
             */
      
            public View focusSearch(@FocusRealDirection int direction) {
      
                if (mParent != null) {
      
                    return mParent.focusSearch(this, direction);
      
                } else {
      
                    return null;
      
                }
      
            }
      
            /**
      
             * This method is the last chance for the focused view and its ancestors to
      
             * respond to an arrow key. This is called when the focused view did not
      
             * consume the key internally, nor could the view system find a new view in
      
             * the requested direction to give focus to.
      
             *
      
             * @param focused The currently focused view.
      
             * @param direction The direction focus wants to move. One of FOCUS_UP,
      
             *        FOCUS_DOWN, FOCUS_LEFT, and FOCUS_RIGHT.
      
             * @return True if the this view consumed this unhandled move.
      
             */
      
            public boolean dispatchUnhandledMove(View focused, @FocusRealDirection int direction) {
      
                return false;
      
            }
      
            /**
      
             * If a user manually specified the next view id for a particular direction,
      
             * use the root to look up the view.
      
             * @param root The root view of the hierarchy containing this view.
      
             * @param direction One of FOCUS_UP, FOCUS_DOWN, FOCUS_LEFT, FOCUS_RIGHT, FOCUS_FORWARD,
      
             * or FOCUS_BACKWARD.
      
             * @return The user specified next view, or null if there is none.
      
             */
      
            View findUserSetNextFocus(View root, @FocusDirection int direction) {
      
                switch (direction) {
      
                    case FOCUS_LEFT:
      
                        if (mNextFocusLeftId == View.NO_ID) return null;
      
                        return findViewInsideOutShouldExist(root, mNextFocusLeftId);
      
                    case FOCUS_RIGHT:
      
                        if (mNextFocusRightId == View.NO_ID) return null;
      
                        return findViewInsideOutShouldExist(root, mNextFocusRightId);
      
                    case FOCUS_UP:
      
                        if (mNextFocusUpId == View.NO_ID) return null;
      
                        return findViewInsideOutShouldExist(root, mNextFocusUpId);
      
                    case FOCUS_DOWN:
      
                        if (mNextFocusDownId == View.NO_ID) return null;
      
                        return findViewInsideOutShouldExist(root, mNextFocusDownId);
      
                    case FOCUS_FORWARD:
      
                        if (mNextFocusForwardId == View.NO_ID) return null;
      
                        return findViewInsideOutShouldExist(root, mNextFocusForwardId);
      
                    case FOCUS_BACKWARD: {
      
                        if (mID == View.NO_ID) return null;
      
                        final int id = mID;
      
                        return root.findViewByPredicateInsideOut(this, new Predicate<View>() {
      
                            @Override
      
                            public boolean apply(View t) {
      
                                return t.mNextFocusForwardId == id;
      
                            }
      
                        });
      
                    }
      
                }
      
                return null;
      
            }
      
            private View findViewInsideOutShouldExist(View root, int id) {
      
                if (mMatchIdPredicate == null) {
      
                    mMatchIdPredicate = new MatchIdPredicate();
      
                }
      
                mMatchIdPredicate.mId = id;
      
                View result = root.findViewByPredicateInsideOut(this, mMatchIdPredicate);
      
                if (result == null) {
      
                    Log.w(VIEW_LOG_TAG, "couldn't find view with id " + id);
      
                }
      
                return result;
      
            }
      
            /**
      
             * Find and return all focusable views that are descendants of this view,
      
             * possibly including this view if it is focusable itself.
      
             *
      
             * @param direction The direction of the focus
      
             * @return A list of focusable views
      
             */
      
            public ArrayList<View> getFocusables(@FocusDirection int direction) {
      
                ArrayList<View> result = new ArrayList<View>(24);
      
                addFocusables(result, direction);
      
                return result;
      
            }
      
            /**
      
             * Add any focusable views that are descendants of this view (possibly
      
             * including this view if it is focusable itself) to views.  If we are in touch mode,
      
             * only add views that are also focusable in touch mode.
      
             *
      
             * @param views Focusable views found so far
      
             * @param direction The direction of the focus
      
             */
      
            public void addFocusables(ArrayList<View> views, @FocusDirection int direction) {
      
                addFocusables(views, direction, FOCUSABLES_TOUCH_MODE);
      
            }
      
            /**
      
             * Adds any focusable views that are descendants of this view (possibly
      
             * including this view if it is focusable itself) to views. This method
      
             * adds all focusable views regardless if we are in touch mode or
      
             * only views focusable in touch mode if we are in touch mode or
      
             * only views that can take accessibility focus if accessibility is enabled
      
             * depending on the focusable mode parameter.
      
             *
      
             * @param views Focusable views found so far or null if all we are interested is
      
             *        the number of focusables.
      
             * @param direction The direction of the focus.
      
             * @param focusableMode The type of focusables to be added.
      
             *
      
             * @see #FOCUSABLES_ALL
      
             * @see #FOCUSABLES_TOUCH_MODE
      
             */
      
            public void addFocusables(ArrayList<View> views, @FocusDirection int direction,
      
                    @FocusableMode int focusableMode) {
      
                if (views == null) {
      
                    return;
      
                }
      
                if (!isFocusable()) {
      
                    return;
      
                }
      
                if ((focusableMode & FOCUSABLES_TOUCH_MODE) == FOCUSABLES_TOUCH_MODE
      
                        && isInTouchMode() && !isFocusableInTouchMode()) {
      
                    return;
      
                }
      
                views.add(this);
      
            }
      
            /**
      
             * Finds the Views that contain given text. The containment is case insensitive.
      
             * The search is performed by either the text that the View renders or the content
      
             * description that describes the view for accessibility purposes and the view does
      
             * not render or both. Clients can specify how the search is to be performed via
      
             * passing the {@link #FIND_VIEWS_WITH_TEXT} and
      
             * {@link #FIND_VIEWS_WITH_CONTENT_DESCRIPTION} flags.
      
             *
      
             * @param outViews The output list of matching Views.
      
             * @param searched The text to match against.
      
             *
      
             * @see #FIND_VIEWS_WITH_TEXT
      
             * @see #FIND_VIEWS_WITH_CONTENT_DESCRIPTION
      
             * @see #setContentDescription(CharSequence)
      
             */
      
            public void findViewsWithText(ArrayList<View> outViews, CharSequence searched,
      
                    @FindViewFlags int flags) {
      
                if (getAccessibilityNodeProvider() != null) {
      
                    if ((flags & FIND_VIEWS_WITH_ACCESSIBILITY_NODE_PROVIDERS) != 0) {
      
                        outViews.add(this);
      
                    }
      
                } else if ((flags & FIND_VIEWS_WITH_CONTENT_DESCRIPTION) != 0
      
                        && (searched != null && searched.length() > 0)
      
                        && (mContentDescription != null && mContentDescription.length() > 0)) {
      
                    String searchedLowerCase = searched.toString().toLowerCase();
      
                    String contentDescriptionLowerCase = mContentDescription.toString().toLowerCase();
      
                    if (contentDescriptionLowerCase.contains(searchedLowerCase)) {
      
                        outViews.add(this);
      
                    }
      
                }
      
            }
      
            /**
      
             * Find and return all touchable views that are descendants of this view,
      
             * possibly including this view if it is touchable itself.
      
             *
      
             * @return A list of touchable views
      
             */
      
            public ArrayList<View> getTouchables() {
      
                ArrayList<View> result = new ArrayList<View>();
      
                addTouchables(result);
      
                return result;
      
            }
      
            /**
      
             * Add any touchable views that are descendants of this view (possibly
      
             * including this view if it is touchable itself) to views.
      
             *
      
             * @param views Touchable views found so far
      
             */
      
            public void addTouchables(ArrayList<View> views) {
      
                final int viewFlags = mViewFlags;
      
                if (((viewFlags & CLICKABLE) == CLICKABLE || (viewFlags & LONG_CLICKABLE) == LONG_CLICKABLE
      
                        || (viewFlags & CONTEXT_CLICKABLE) == CONTEXT_CLICKABLE)
      
                        && (viewFlags & ENABLED_MASK) == ENABLED) {
      
                    views.add(this);
      
                }
      
            }
      
            /**
      
             * Returns whether this View is accessibility focused.
      
             *
      
             * @return True if this View is accessibility focused.
      
             */
      
            public boolean isAccessibilityFocused() {
      
                return (mPrivateFlags2 & PFLAG2_ACCESSIBILITY_FOCUSED) != 0;
      
            }
      
            /**
      
             * Call this to try to give accessibility focus to this view.
      
             *
      
             * A view will not actually take focus if {@link AccessibilityManager#isEnabled()}
      
             * returns false or the view is no visible or the view already has accessibility
      
             * focus.
      
             *
      
             * See also {@link #focusSearch(int)}, which is what you call to say that you
      
             * have focus, and you want your parent to look for the next one.
      
             *
      
             * @return Whether this view actually took accessibility focus.
      
             *
      
             * @hide
      
             */
      
            public boolean requestAccessibilityFocus() {
      
                AccessibilityManager manager = AccessibilityManager.getInstance(mContext);
      
                if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) {
      
                    return false;
      
                }
      
                if ((mViewFlags & VISIBILITY_MASK) != VISIBLE) {
      
                    return false;
      
                }
      
                if ((mPrivateFlags2 & PFLAG2_ACCESSIBILITY_FOCUSED) == 0) {
      
                    mPrivateFlags2 |= PFLAG2_ACCESSIBILITY_FOCUSED;
      
                    ViewRootImpl viewRootImpl = getViewRootImpl();
      
                    if (viewRootImpl != null) {
      
                        viewRootImpl.setAccessibilityFocus(this, null);
      
                    }
      
                    invalidate();
      
                    sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED);
      
                    return true;
      
                }
      
                return false;
      
            }
      
            /**
      
             * Call this to try to clear accessibility focus of this view.
      
             *
      
             * See also {@link #focusSearch(int)}, which is what you call to say that you
      
             * have focus, and you want your parent to look for the next one.
      
             *
      
             * @hide
      
             */
      
            public void clearAccessibilityFocus() {
      
                clearAccessibilityFocusNoCallbacks();
      
                // Clear the global reference of accessibility focus if this
      
                // view or any of its descendants had accessibility focus.
      
                ViewRootImpl viewRootImpl = getViewRootImpl();
      
                if (viewRootImpl != null) {
      
                    View focusHost = viewRootImpl.getAccessibilityFocusedHost();
      
                    if (focusHost != null && ViewRootImpl.isViewDescendantOf(focusHost, this)) {
      
                        viewRootImpl.setAccessibilityFocus(null, null);
      
                    }
      
                }
      
            }
      
            private void sendAccessibilityHoverEvent(int eventType) {
      
                // Since we are not delivering to a client accessibility events from not
      
                // important views (unless the clinet request that) we need to fire the
      
                // event from the deepest view exposed to the client. As a consequence if
      
                // the user crosses a not exposed view the client will see enter and exit
      
                // of the exposed predecessor followed by and enter and exit of that same
      
                // predecessor when entering and exiting the not exposed descendant. This
      
                // is fine since the client has a clear idea which view is hovered at the
      
                // price of a couple more events being sent. This is a simple and
      
                // working solution.
      
                View source = this;
      
                while (true) {
      
                    if (source.includeForAccessibility()) {
      
                        source.sendAccessibilityEvent(eventType);
      
                        return;
      
                    }
      
                    ViewParent parent = source.getParent();
      
                    if (parent instanceof View) {
      
                        source = (View) parent;
      
                    } else {
      
                        return;
      
                    }
      
                }
      
            }
      
            /**
      
             * Clears accessibility focus without calling any callback methods
      
             * normally invoked in {@link #clearAccessibilityFocus()}. This method
      
             * is used for clearing accessibility focus when giving this focus to
      
             * another view.
      
             */
      
            void clearAccessibilityFocusNoCallbacks() {
      
                if ((mPrivateFlags2 & PFLAG2_ACCESSIBILITY_FOCUSED) != 0) {
      
                    mPrivateFlags2 &= ~PFLAG2_ACCESSIBILITY_FOCUSED;
      
                    invalidate();
      
                    sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED);
      
                }
      
            }
      
            /**
      
             * Call this to try to give focus to a specific view or to one of its
      
             * descendants.
      
             *
      
             * A view will not actually take focus if it is not focusable ({@link #isFocusable} returns
      
             * false), or if it is focusable and it is not focusable in touch mode
      
             * ({@link #isFocusableInTouchMode}) while the device is in touch mode.
      
             *
      
             * See also {@link #focusSearch(int)}, which is what you call to say that you
      
             * have focus, and you want your parent to look for the next one.
      
             *
      
             * This is equivalent to calling {@link #requestFocus(int, Rect)} with arguments
      
             * {@link #FOCUS_DOWN} and <code>null</code>.
      
             *
      
             * @return Whether this view or one of its descendants actually took focus.
      
             */
      
            public final boolean requestFocus() {
      
                return requestFocus(View.FOCUS_DOWN);
      
            }
      
            /**
      
             * Call this to try to give focus to a specific view or to one of its
      
             * descendants and give it a hint about what direction focus is heading.
      
             *
      
             * A view will not actually take focus if it is not focusable ({@link #isFocusable} returns
      
             * false), or if it is focusable and it is not focusable in touch mode
      
             * ({@link #isFocusableInTouchMode}) while the device is in touch mode.
      
             *
      
             * See also {@link #focusSearch(int)}, which is what you call to say that you
      
             * have focus, and you want your parent to look for the next one.
      
             *
      
             * This is equivalent to calling {@link #requestFocus(int, Rect)} with
      
             * <code>null</code> set for the previously focused rectangle.
      
             *
      
             * @param direction One of FOCUS_UP, FOCUS_DOWN, FOCUS_LEFT, and FOCUS_RIGHT
      
             * @return Whether this view or one of its descendants actually took focus.
      
             */
      
            public final boolean requestFocus(int direction) {
      
                return requestFocus(direction, null);
      
            }
      
            /**
      
             * Call this to try to give focus to a specific view or to one of its descendants
      
             * and give it hints about the direction and a specific rectangle that the focus
      
             * is coming from.  The rectangle can help give larger views a finer grained hint
      
             * about where focus is coming from, and therefore, where to show selection, or
      
             * forward focus change internally.
      
             *
      
             * A view will not actually take focus if it is not focusable ({@link #isFocusable} returns
      
             * false), or if it is focusable and it is not focusable in touch mode
      
             * ({@link #isFocusableInTouchMode}) while the device is in touch mode.
      
             *
      
             * A View will not take focus if it is not visible.
      
             *
      
             * A View will not take focus if one of its parents has
      
             * {@link android.view.ViewGroup#getDescendantFocusability()} equal to
      
             * {@link ViewGroup#FOCUS_BLOCK_DESCENDANTS}.
      
             *
      
             * See also {@link #focusSearch(int)}, which is what you call to say that you
      
             * have focus, and you want your parent to look for the next one.
      
             *
      
             * You may wish to override this method if your custom {@link View} has an internal
      
             * {@link View} that it wishes to forward the request to.
      
             *
      
             * @param direction One of FOCUS_UP, FOCUS_DOWN, FOCUS_LEFT, and FOCUS_RIGHT
      
             * @param previouslyFocusedRect The rectangle (in this View's coordinate system)
      
             *        to give a finer grained hint about where focus is coming from.  May be null
      
             *        if there is no hint.
      
             * @return Whether this view or one of its descendants actually took focus.
      
             */
      
            public boolean requestFocus(int direction, Rect previouslyFocusedRect) {
      
                return requestFocusNoSearch(direction, previouslyFocusedRect);
      
            }
      
            private boolean requestFocusNoSearch(int direction, Rect previouslyFocusedRect) {
      
                // need to be focusable
      
                if ((mViewFlags & FOCUSABLE_MASK) != FOCUSABLE ||
      
                        (mViewFlags & VISIBILITY_MASK) != VISIBLE) {
      
                    return false;
      
                }
      
                // need to be focusable in touch mode if in touch mode
      
                if (isInTouchMode() &&
      
                    (FOCUSABLE_IN_TOUCH_MODE != (mViewFlags & FOCUSABLE_IN_TOUCH_MODE))) {
      
                       return false;
      
                }
      
                // need to not have any parents blocking us
      
                if (hasAncestorThatBlocksDescendantFocus()) {
      
                    return false;
      
                }
      
                handleFocusGainInternal(direction, previouslyFocusedRect);
      
                return true;
      
            }
      
            /**
      
             * Call this to try to give focus to a specific view or to one of its descendants. This is a
      
             * special variant of {@link #requestFocus() } that will allow views that are not focusable in
      
             * touch mode to request focus when they are touched.
      
             *
      
             * @return Whether this view or one of its descendants actually took focus.
      
             *
      
             * @see #isInTouchMode()
      
             *
      
             */
      
            public final boolean requestFocusFromTouch() {
      
                // Leave touch mode if we need to
      
                if (isInTouchMode()) {
      
                    ViewRootImpl viewRoot = getViewRootImpl();
      
                    if (viewRoot != null) {
      
                        viewRoot.ensureTouchMode(false);
      
                    }
      
                }
      
                return requestFocus(View.FOCUS_DOWN);
      
            }
      
            /**
      
             * @return Whether any ancestor of this view blocks descendant focus.
      
             */
      
            private boolean hasAncestorThatBlocksDescendantFocus() {
      
                final boolean focusableInTouchMode = isFocusableInTouchMode();
      
                ViewParent ancestor = mParent;
      
                while (ancestor instanceof ViewGroup) {
      
                    final ViewGroup vgAncestor = (ViewGroup) ancestor;
      
                    if (vgAncestor.getDescendantFocusability() == ViewGroup.FOCUS_BLOCK_DESCENDANTS
      
                            || (!focusableInTouchMode && vgAncestor.shouldBlockFocusForTouchscreen())) {
      
                        return true;
      
                    } else {
      
                        ancestor = vgAncestor.getParent();
      
                    }
      
                }
      
                return false;
      
            }
      
            /**
      
             * Gets the mode for determining whether this View is important for accessibility
      
             * which is if it fires accessibility events and if it is reported to
      
             * accessibility services that query the screen.
      
             *
      
             * @return The mode for determining whether a View is important for accessibility.
      
             *
      
             * @attr ref android.R.styleable#View_importantForAccessibility
      
             *
      
             * @see #IMPORTANT_FOR_ACCESSIBILITY_YES
      
             * @see #IMPORTANT_FOR_ACCESSIBILITY_NO
      
             * @see #IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS
      
             * @see #IMPORTANT_FOR_ACCESSIBILITY_AUTO
      
             */
      
            @ViewDebug.ExportedProperty(category = "accessibility", mapping = {
      
                    @ViewDebug.IntToString(from = IMPORTANT_FOR_ACCESSIBILITY_AUTO, to = "auto"),
      
                    @ViewDebug.IntToString(from = IMPORTANT_FOR_ACCESSIBILITY_YES, to = "yes"),
      
                    @ViewDebug.IntToString(from = IMPORTANT_FOR_ACCESSIBILITY_NO, to = "no"),
      
                    @ViewDebug.IntToString(from = IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS,
      
                            to = "noHideDescendants")
      
                })
      
            public int getImportantForAccessibility() {
      
                return (mPrivateFlags2 & PFLAG2_IMPORTANT_FOR_ACCESSIBILITY_MASK)
      
                        >> PFLAG2_IMPORTANT_FOR_ACCESSIBILITY_SHIFT;
      
            }
      
            /**
      
             * Sets the live region mode for this view. This indicates to accessibility
      
             * services whether they should automatically notify the user about changes
      
             * to the view's content description or text, or to the content descriptions
      
             * or text of the view's children (where applicable).
      
             * <p>
      
             * For example, in a login screen with a TextView that displays an "incorrect
      
             * password" notification, that view should be marked as a live region with
      
             * mode {@link #ACCESSIBILITY_LIVE_REGION_POLITE}.
      
             * <p>
      
             * To disable change notifications for this view, use
      
             * {@link #ACCESSIBILITY_LIVE_REGION_NONE}. This is the default live region
      
             * mode for most views.
      
             * <p>
      
             * To indicate that the user should be notified of changes, use
      
             * {@link #ACCESSIBILITY_LIVE_REGION_POLITE}.
      
             * <p>
      
             * If the view's changes should interrupt ongoing speech and notify the user
      
             * immediately, use {@link #ACCESSIBILITY_LIVE_REGION_ASSERTIVE}.
      
             *
      
             * @param mode The live region mode for this view, one of:
      
             *        <ul>
      
             *        <li>{@link #ACCESSIBILITY_LIVE_REGION_NONE}
      
             *        <li>{@link #ACCESSIBILITY_LIVE_REGION_POLITE}
      
             *        <li>{@link #ACCESSIBILITY_LIVE_REGION_ASSERTIVE}
      
             *        </ul>
      
             * @attr ref android.R.styleable#View_accessibilityLiveRegion
      
             */
      
            public void setAccessibilityLiveRegion(int mode) {
      
                if (mode != getAccessibilityLiveRegion()) {
      
                    mPrivateFlags2 &= ~PFLAG2_ACCESSIBILITY_LIVE_REGION_MASK;
      
                    mPrivateFlags2 |= (mode << PFLAG2_ACCESSIBILITY_LIVE_REGION_SHIFT)
      
                            & PFLAG2_ACCESSIBILITY_LIVE_REGION_MASK;
      
                    notifyViewAccessibilityStateChangedIfNeeded(
      
                            AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
      
                }
      
            }
      
            /**
      
             * Gets the live region mode for this View.
      
             *
      
             * @return The live region mode for the view.
      
             *
      
             * @attr ref android.R.styleable#View_accessibilityLiveRegion
      
             *
      
             * @see #setAccessibilityLiveRegion(int)
      
             */
      
            public int getAccessibilityLiveRegion() {
      
                return (mPrivateFlags2 & PFLAG2_ACCESSIBILITY_LIVE_REGION_MASK)
      
                        >> PFLAG2_ACCESSIBILITY_LIVE_REGION_SHIFT;
      
            }
      
            /**
      
             * Sets how to determine whether this view is important for accessibility
      
             * which is if it fires accessibility events and if it is reported to
      
             * accessibility services that query the screen.
      
             *
      
             * @param mode How to determine whether this view is important for accessibility.
      
             *
      
             * @attr ref android.R.styleable#View_importantForAccessibility
      
             *
      
             * @see #IMPORTANT_FOR_ACCESSIBILITY_YES
      
             * @see #IMPORTANT_FOR_ACCESSIBILITY_NO
      
             * @see #IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS
      
             * @see #IMPORTANT_FOR_ACCESSIBILITY_AUTO
      
             */
      
            public void setImportantForAccessibility(int mode) {
      
                final int oldMode = getImportantForAccessibility();
      
                if (mode != oldMode) {
      
                    // If we're moving between AUTO and another state, we might not need
      
                    // to send a subtree changed notification. We'll store the computed
      
                    // importance, since we'll need to check it later to make sure.
      
                    final boolean maySkipNotify = oldMode == IMPORTANT_FOR_ACCESSIBILITY_AUTO
      
                            || mode == IMPORTANT_FOR_ACCESSIBILITY_AUTO;
      
                    final boolean oldIncludeForAccessibility = maySkipNotify && includeForAccessibility();
      
                    mPrivateFlags2 &= ~PFLAG2_IMPORTANT_FOR_ACCESSIBILITY_MASK;
      
                    mPrivateFlags2 |= (mode << PFLAG2_IMPORTANT_FOR_ACCESSIBILITY_SHIFT)
      
                            & PFLAG2_IMPORTANT_FOR_ACCESSIBILITY_MASK;
      
                    if (!maySkipNotify || oldIncludeForAccessibility != includeForAccessibility()) {
      
                        notifySubtreeAccessibilityStateChangedIfNeeded();
      
                    } else {
      
                        notifyViewAccessibilityStateChangedIfNeeded(
      
                                AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
      
                    }
      
                }
      
            }
      
            /**
      
             * Computes whether this view should be exposed for accessibility. In
      
             * general, views that are interactive or provide information are exposed
      
             * while views that serve only as containers are hidden.
      
             * <p>
      
             * If an ancestor of this view has importance
      
             * {@link #IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS}, this method
      
             * returns <code>false</code>.
      
             * <p>
      
             * Otherwise, the value is computed according to the view's
      
             * {@link #getImportantForAccessibility()} value:
      
             * <ol>
      
             * <li>{@link #IMPORTANT_FOR_ACCESSIBILITY_NO} or
      
             * {@link #IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS}, return <code>false
      
             * </code>
      
             * <li>{@link #IMPORTANT_FOR_ACCESSIBILITY_YES}, return <code>true</code>
      
             * <li>{@link #IMPORTANT_FOR_ACCESSIBILITY_AUTO}, return <code>true</code> if
      
             * view satisfies any of the following:
      
             * <ul>
      
             * <li>Is actionable, e.g. {@link #isClickable()},
      
             * {@link #isLongClickable()}, or {@link #isFocusable()}
      
             * <li>Has an {@link AccessibilityDelegate}
      
             * <li>Has an interaction listener, e.g. {@link OnTouchListener},
      
             * {@link OnKeyListener}, etc.
      
             * <li>Is an accessibility live region, e.g.
      
             * {@link #getAccessibilityLiveRegion()} is not
      
             * {@link #ACCESSIBILITY_LIVE_REGION_NONE}.
      
             * </ul>
      
             * </ol>
      
             *
      
             * @return Whether the view is exposed for accessibility.
      
             * @see #setImportantForAccessibility(int)
      
             * @see #getImportantForAccessibility()
      
             */
      
            public boolean isImportantForAccessibility() {
      
                final int mode = (mPrivateFlags2 & PFLAG2_IMPORTANT_FOR_ACCESSIBILITY_MASK)
      
                        >> PFLAG2_IMPORTANT_FOR_ACCESSIBILITY_SHIFT;
      
                if (mode == IMPORTANT_FOR_ACCESSIBILITY_NO
      
                        || mode == IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS) {
      
                    return false;
      
                }
      
                // Check parent mode to ensure we're not hidden.
      
                ViewParent parent = mParent;
      
                while (parent instanceof View) {
      
                    if (((View) parent).getImportantForAccessibility()
      
                            == IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS) {
      
                        return false;
      
                    }
      
                    parent = parent.getParent();
      
                }
      
                return mode == IMPORTANT_FOR_ACCESSIBILITY_YES || isActionableForAccessibility()
      
                        || hasListenersForAccessibility() || getAccessibilityNodeProvider() != null
      
                        || getAccessibilityLiveRegion() != ACCESSIBILITY_LIVE_REGION_NONE;
      
            }
      
            /**
      
             * Gets the parent for accessibility purposes. Note that the parent for
      
             * accessibility is not necessary the immediate parent. It is the first
      
             * predecessor that is important for accessibility.
      
             *
      
             * @return The parent for accessibility purposes.
      
             */
      
            public ViewParent getParentForAccessibility() {
      
                if (mParent instanceof View) {
      
                    View parentView = (View) mParent;
      
                    if (parentView.includeForAccessibility()) {
      
                        return mParent;
      
                    } else {
      
                        return mParent.getParentForAccessibility();
      
                    }
      
                }
      
                return null;
      
            }
      
            /**
      
             * Adds the children of this View relevant for accessibility to the given list
      
             * as output. Since some Views are not important for accessibility the added
      
             * child views are not necessarily direct children of this view, rather they are
      
             * the first level of descendants important for accessibility.
      
             *
      
             * @param outChildren The output list that will receive children for accessibility.
      
             */
      
            public void addChildrenForAccessibility(ArrayList<View> outChildren) {
      
            }
      
            /**
      
             * Whether to regard this view for accessibility. A view is regarded for
      
             * accessibility if it is important for accessibility or the querying
      
             * accessibility service has explicitly requested that view not
      
             * important for accessibility are regarded.
      
             *
      
             * @return Whether to regard the view for accessibility.
      
             *
      
             * @hide
      
             */
      
            public boolean includeForAccessibility() {
      
                if (mAttachInfo != null) {
      
                    return (mAttachInfo.mAccessibilityFetchFlags
      
                            & AccessibilityNodeInfo.FLAG_INCLUDE_NOT_IMPORTANT_VIEWS) != 0
      
                            || isImportantForAccessibility();
      
                }
      
                return false;
      
            }
      
            /**
      
             * Returns whether the View is considered actionable from
      
             * accessibility perspective. Such view are important for
      
             * accessibility.
      
             *
      
             * @return True if the view is actionable for accessibility.
      
             *
      
             * @hide
      
             */
      
            public boolean isActionableForAccessibility() {
      
                return (isClickable() || isLongClickable() || isFocusable());
      
            }
      
            /**
      
             * Returns whether the View has registered callbacks which makes it
      
             * important for accessibility.
      
             *
      
             * @return True if the view is actionable for accessibility.
      
             */
      
            private boolean hasListenersForAccessibility() {
      
                ListenerInfo info = getListenerInfo();
      
                return mTouchDelegate != null || info.mOnKeyListener != null
      
                        || info.mOnTouchListener != null || info.mOnGenericMotionListener != null
      
                        || info.mOnHoverListener != null || info.mOnDragListener != null;
      
            }
      
            /**
      
             * Notifies that the accessibility state of this view changed. The change
      
             * is local to this view and does not represent structural changes such
      
             * as children and parent. For example, the view became focusable. The
      
             * notification is at at most once every
      
             * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}
      
             * to avoid unnecessary load to the system. Also once a view has a pending
      
             * notification this method is a NOP until the notification has been sent.
      
             *
      
             * @hide
      
             */
      
            public void notifyViewAccessibilityStateChangedIfNeeded(int changeType) {
      
                if (!AccessibilityManager.getInstance(mContext).isEnabled() || mAttachInfo == null) {
      
                    return;
      
                }
      
                if (mSendViewStateChangedAccessibilityEvent == null) {
      
                    mSendViewStateChangedAccessibilityEvent =
      
                            new SendViewStateChangedAccessibilityEvent();
      
                }
      
                mSendViewStateChangedAccessibilityEvent.runOrPost(changeType);
      
            }
      
            /**
      
             * Notifies that the accessibility state of this view changed. The change
      
             * is *not* local to this view and does represent structural changes such
      
             * as children and parent. For example, the view size changed. The
      
             * notification is at at most once every
      
             * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}
      
             * to avoid unnecessary load to the system. Also once a view has a pending
      
             * notification this method is a NOP until the notification has been sent.
      
             *
      
             * @hide
      
             */
      
            public void notifySubtreeAccessibilityStateChangedIfNeeded() {
      
                if (!AccessibilityManager.getInstance(mContext).isEnabled() || mAttachInfo == null) {
      
                    return;
      
                }
      
                if ((mPrivateFlags2 & PFLAG2_SUBTREE_ACCESSIBILITY_STATE_CHANGED) == 0) {
      
                    mPrivateFlags2 |= PFLAG2_SUBTREE_ACCESSIBILITY_STATE_CHANGED;
      
                    if (mParent != null) {
      
                        try {
      
                            mParent.notifySubtreeAccessibilityStateChanged(
      
                                    this, this, AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE);
      
                        } catch (AbstractMethodError e) {
      
                            Log.e(VIEW_LOG_TAG, mParent.getClass().getSimpleName() +
      
                                    " does not fully implement ViewParent", e);
      
                        }
      
                    }
      
                }
      
            }
      
            /**
      
             * Change the visibility of the View without triggering any other changes. This is
      
             * important for transitions, where visibility changes should not adjust focus or
      
             * trigger a new layout. This is only used when the visibility has already been changed
      
             * and we need a transient value during an animation. When the animation completes,
      
             * the original visibility value is always restored.
      
             *
      
             * @param visibility One of {@link #VISIBLE}, {@link #INVISIBLE}, or {@link #GONE}.
      
             * @hide
      
             */
      
            public void setTransitionVisibility(@Visibility int visibility) {
      
                mViewFlags = (mViewFlags & ~View.VISIBILITY_MASK) | visibility;
      
            }
      
            /**
      
             * Reset the flag indicating the accessibility state of the subtree rooted
      
             * at this view changed.
      
             */
      
            void resetSubtreeAccessibilityStateChanged() {
      
                mPrivateFlags2 &= ~PFLAG2_SUBTREE_ACCESSIBILITY_STATE_CHANGED;
      
            }
      
            /**
      
             * Report an accessibility action to this view's parents for delegated processing.
      
             *
      
             * <p>Implementations of {@link #performAccessibilityAction(int, Bundle)} may internally
      
             * call this method to delegate an accessibility action to a supporting parent. If the parent
      
             * returns true from its
      
             * {@link ViewParent#onNestedPrePerformAccessibilityAction(View, int, android.os.Bundle)}
      
             * method this method will return true to signify that the action was consumed.</p>
      
             *
      
             * <p>This method is useful for implementing nested scrolling child views. If
      
             * {@link #isNestedScrollingEnabled()} returns true and the action is a scrolling action
      
             * a custom view implementation may invoke this method to allow a parent to consume the
      
             * scroll first. If this method returns true the custom view should skip its own scrolling
      
             * behavior.</p>
      
             *
      
             * @param action Accessibility action to delegate
      
             * @param arguments Optional action arguments
      
             * @return true if the action was consumed by a parent
      
             */
      
            public boolean dispatchNestedPrePerformAccessibilityAction(int action, Bundle arguments) {
      
                for (ViewParent p = getParent(); p != null; p = p.getParent()) {
      
                    if (p.onNestedPrePerformAccessibilityAction(this, action, arguments)) {
      
                        return true;
      
                    }
      
                }
      
                return false;
      
            }
      
            /**
      
             * Performs the specified accessibility action on the view. For
      
             * possible accessibility actions look at {@link AccessibilityNodeInfo}.
      
             * <p>
      
             * If an {@link AccessibilityDelegate} has been specified via calling
      
             * {@link #setAccessibilityDelegate(AccessibilityDelegate)} its
      
             * {@link AccessibilityDelegate#performAccessibilityAction(View, int, Bundle)}
      
             * is responsible for handling this call.
      
             * </p>
      
             *
      
             * <p>The default implementation will delegate
      
             * {@link AccessibilityNodeInfo#ACTION_SCROLL_BACKWARD} and
      
             * {@link AccessibilityNodeInfo#ACTION_SCROLL_FORWARD} to nested scrolling parents if
      
             * {@link #isNestedScrollingEnabled() nested scrolling is enabled} on this view.</p>
      
             *
      
             * @param action The action to perform.
      
             * @param arguments Optional action arguments.
      
             * @return Whether the action was performed.
      
             */
      
            public boolean performAccessibilityAction(int action, Bundle arguments) {
      
              if (mAccessibilityDelegate != null) {
      
                  return mAccessibilityDelegate.performAccessibilityAction(this, action, arguments);
      
              } else {
      
                  return performAccessibilityActionInternal(action, arguments);
      
              }
      
            }
      
           /**
      
            * @see #performAccessibilityAction(int, Bundle)
      
            *
      
            * Note: Called from the default {@link AccessibilityDelegate}.
      
            *
      
            * @hide
      
            */
      
            public boolean performAccessibilityActionInternal(int action, Bundle arguments) {
      
                if (isNestedScrollingEnabled()
      
                        && (action == AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD
      
                        || action == AccessibilityNodeInfo.ACTION_SCROLL_FORWARD
      
                        || action == R.id.accessibilityActionScrollUp
      
                        || action == R.id.accessibilityActionScrollLeft
      
                        || action == R.id.accessibilityActionScrollDown
      
                        || action == R.id.accessibilityActionScrollRight)) {
      
                    if (dispatchNestedPrePerformAccessibilityAction(action, arguments)) {
      
                        return true;
      
                    }
      
                }
      
                switch (action) {
      
                    case AccessibilityNodeInfo.ACTION_CLICK: {
      
                        if (isClickable()) {
      
                            performClick();
      
                            return true;
      
                        }
      
                    } break;
      
                    case AccessibilityNodeInfo.ACTION_LONG_CLICK: {
      
                        if (isLongClickable()) {
      
                            performLongClick();
      
                            return true;
      
                        }
      
                    } break;
      
                    case AccessibilityNodeInfo.ACTION_FOCUS: {
      
                        if (!hasFocus()) {
      
                            // Get out of touch mode since accessibility
      
                            // wants to move focus around.
      
                            getViewRootImpl().ensureTouchMode(false);
      
                            return requestFocus();
      
                        }
      
                    } break;
      
                    case AccessibilityNodeInfo.ACTION_CLEAR_FOCUS: {
      
                        if (hasFocus()) {
      
                            clearFocus();
      
                            return !isFocused();
      
                        }
      
                    } break;
      
                    case AccessibilityNodeInfo.ACTION_SELECT: {
      
                        if (!isSelected()) {
      
                            setSelected(true);
      
                            return isSelected();
      
                        }
      
                    } break;
      
                    case AccessibilityNodeInfo.ACTION_CLEAR_SELECTION: {
      
                        if (isSelected()) {
      
                            setSelected(false);
      
                            return !isSelected();
      
                        }
      
                    } break;
      
                    case AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS: {
      
                        if (!isAccessibilityFocused()) {
      
                            return requestAccessibilityFocus();
      
                        }
      
                    } break;
      
                    case AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS: {
      
                        if (isAccessibilityFocused()) {
      
                            clearAccessibilityFocus();
      
                            return true;
      
                        }
      
                    } break;
      
                    case AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY: {
      
                        if (arguments != null) {
      
                            final int granularity = arguments.getInt(
      
                                    AccessibilityNodeInfo.ACTION_ARGUMENT_MOVEMENT_GRANULARITY_INT);
      
                            final boolean extendSelection = arguments.getBoolean(
      
                                    AccessibilityNodeInfo.ACTION_ARGUMENT_EXTEND_SELECTION_BOOLEAN);
      
                            return traverseAtGranularity(granularity, true, extendSelection);
      
                        }
      
                    } break;
      
                    case AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY: {
      
                        if (arguments != null) {
      
                            final int granularity = arguments.getInt(
      
                                    AccessibilityNodeInfo.ACTION_ARGUMENT_MOVEMENT_GRANULARITY_INT);
      
                            final boolean extendSelection = arguments.getBoolean(
      
                                    AccessibilityNodeInfo.ACTION_ARGUMENT_EXTEND_SELECTION_BOOLEAN);
      
                            return traverseAtGranularity(granularity, false, extendSelection);
      
                        }
      
                    } break;
      
                    case AccessibilityNodeInfo.ACTION_SET_SELECTION: {
      
                        CharSequence text = getIterableTextForAccessibility();
      
                        if (text == null) {
      
                            return false;
      
                        }
      
                        final int start = (arguments != null) ? arguments.getInt(
      
                                AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_START_INT, -1) : -1;
      
                        final int end = (arguments != null) ? arguments.getInt(
      
                        AccessibilityNodeInfo.ACTION_ARGUMENT_SELECTION_END_INT, -1) : -1;
      
                        // Only cursor position can be specified (selection length == 0)
      
                        if ((getAccessibilitySelectionStart() != start
      
                                || getAccessibilitySelectionEnd() != end)
      
                                && (start == end)) {
      
                            setAccessibilitySelection(start, end);
      
                            notifyViewAccessibilityStateChangedIfNeeded(
      
                                    AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
      
                            return true;
      
                        }
      
                    } break;
      
                    case R.id.accessibilityActionShowOnScreen: {
      
                        if (mAttachInfo != null) {
      
                            final Rect r = mAttachInfo.mTmpInvalRect;
      
                            getDrawingRect(r);
      
                            return requestRectangleOnScreen(r, true);
      
                        }
      
                    } break;
      
                    case R.id.accessibilityActionContextClick: {
      
                        if (isContextClickable()) {
      
                            performContextClick();
      
                            return true;
      
                        }
      
                    } break;
      
                }
      
                return false;
      
            }
      
            private boolean traverseAtGranularity(int granularity, boolean forward,
      
                    boolean extendSelection) {
      
                CharSequence text = getIterableTextForAccessibility();
      
                if (text == null || text.length() == 0) {
      
                    return false;
      
                }
      
                TextSegmentIterator iterator = getIteratorForGranularity(granularity);
      
                if (iterator == null) {
      
                    return false;
      
                }
      
                int current = getAccessibilitySelectionEnd();
      
                if (current == ACCESSIBILITY_CURSOR_POSITION_UNDEFINED) {
      
                    current = forward ? 0 : text.length();
      
                }
      
                final int[] range = forward ? iterator.following(current) : iterator.preceding(current);
      
                if (range == null) {
      
                    return false;
      
                }
      
                final int segmentStart = range[0];
      
                final int segmentEnd = range[1];
      
                int selectionStart;
      
                int selectionEnd;
      
                if (extendSelection && isAccessibilitySelectionExtendable()) {
      
                    selectionStart = getAccessibilitySelectionStart();
      
                    if (selectionStart == ACCESSIBILITY_CURSOR_POSITION_UNDEFINED) {
      
                        selectionStart = forward ? segmentStart : segmentEnd;
      
                    }
      
                    selectionEnd = forward ? segmentEnd : segmentStart;
      
                } else {
      
                    selectionStart = selectionEnd= forward ? segmentEnd : segmentStart;
      
                }
      
                setAccessibilitySelection(selectionStart, selectionEnd);
      
                final int action = forward ? AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY
      
                        : AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY;
      
                sendViewTextTraversedAtGranularityEvent(action, granularity, segmentStart, segmentEnd);
      
                return true;
      
            }
      
            /**
      
             * Gets the text reported for accessibility purposes.
      
             *
      
             * @return The accessibility text.
      
             *
      
             * @hide
      
             */
      
            public CharSequence getIterableTextForAccessibility() {
      
                return getContentDescription();
      
            }
      
            /**
      
             * Gets whether accessibility selection can be extended.
      
             *
      
             * @return If selection is extensible.
      
             *
      
             * @hide
      
             */
      
            public boolean isAccessibilitySelectionExtendable() {
      
                return false;
      
            }
      
            /**
      
             * @hide
      
             */
      
            public int getAccessibilitySelectionStart() {
      
                return mAccessibilityCursorPosition;
      
            }
      
            /**
      
             * @hide
      
             */
      
            public int getAccessibilitySelectionEnd() {
      
                return getAccessibilitySelectionStart();
      
            }
      
            /**
      
             * @hide
      
             */
      
            public void setAccessibilitySelection(int start, int end) {
      
                if (start ==  end && end == mAccessibilityCursorPosition) {
      
                    return;
      
                }
      
                if (start >= 0 && start == end && end <= getIterableTextForAccessibility().length()) {
      
                    mAccessibilityCursorPosition = start;
      
                } else {
      
                    mAccessibilityCursorPosition = ACCESSIBILITY_CURSOR_POSITION_UNDEFINED;
      
                }
      
                sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_TEXT_SELECTION_CHANGED);
      
            }
      
            private void sendViewTextTraversedAtGranularityEvent(int action, int granularity,
      
                    int fromIndex, int toIndex) {
      
                if (mParent == null) {
      
                    return;
      
                }
      
                AccessibilityEvent event = AccessibilityEvent.obtain(
      
                        AccessibilityEvent.TYPE_VIEW_TEXT_TRAVERSED_AT_MOVEMENT_GRANULARITY);
      
                onInitializeAccessibilityEvent(event);
      
                onPopulateAccessibilityEvent(event);
      
                event.setFromIndex(fromIndex);
      
                event.setToIndex(toIndex);
      
                event.setAction(action);
      
                event.setMovementGranularity(granularity);
      
                mParent.requestSendAccessibilityEvent(this, event);
      
            }
      
            /**
      
             * @hide
      
             */
      
            public TextSegmentIterator getIteratorForGranularity(int granularity) {
      
                switch (granularity) {
      
                    case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_CHARACTER: {
      
                        CharSequence text = getIterableTextForAccessibility();
      
                        if (text != null && text.length() > 0) {
      
                            CharacterTextSegmentIterator iterator =
      
                                CharacterTextSegmentIterator.getInstance(
      
                                        mContext.getResources().getConfiguration().locale);
      
                            iterator.initialize(text.toString());
      
                            return iterator;
      
                        }
      
                    } break;
      
                    case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_WORD: {
      
                        CharSequence text = getIterableTextForAccessibility();
      
                        if (text != null && text.length() > 0) {
      
                            WordTextSegmentIterator iterator =
      
                                WordTextSegmentIterator.getInstance(
      
                                        mContext.getResources().getConfiguration().locale);
      
                            iterator.initialize(text.toString());
      
                            return iterator;
      
                        }
      
                    } break;
      
                    case AccessibilityNodeInfo.MOVEMENT_GRANULARITY_PARAGRAPH: {
      
                        CharSequence text = getIterableTextForAccessibility();
      
                        if (text != null && text.length() > 0) {
      
                            ParagraphTextSegmentIterator iterator =
      
                                ParagraphTextSegmentIterator.getInstance();
      
                            iterator.initialize(text.toString());
      
                            return iterator;
      
                        }
      
                    } break;
      
                }
      
                return null;
      
            }
      
            /**
      
             * @hide
      
             */
      
            public void dispatchStartTemporaryDetach() {
      
                onStartTemporaryDetach();
      
            }
      
            /**
      
             * This is called when a container is going to temporarily detach a child, with
      
             * {@link ViewGroup#detachViewFromParent(View) ViewGroup.detachViewFromParent}.
      
             * It will either be followed by {@link #onFinishTemporaryDetach()} or
      
             * {@link #onDetachedFromWindow()} when the container is done.
      
             */
      
            public void onStartTemporaryDetach() {
      
                removeUnsetPressCallback();
      
                mPrivateFlags |= PFLAG_CANCEL_NEXT_UP_EVENT;
      
            }
      
            /**
      
             * @hide
      
             */
      
            public void dispatchFinishTemporaryDetach() {
      
                onFinishTemporaryDetach();
      
            }
      
            /**
      
             * Called after {@link #onStartTemporaryDetach} when the container is done
      
             * changing the view.
      
             */
      
            public void onFinishTemporaryDetach() {
      
            }
      
            /**
      
             * Return the global {@link KeyEvent.DispatcherState KeyEvent.DispatcherState}
      
             * for this view's window.  Returns null if the view is not currently attached
      
             * to the window.  Normally you will not need to use this directly, but
      
             * just use the standard high-level event callbacks like
      
             * {@link #onKeyDown(int, KeyEvent)}.
      
             */
      
            public KeyEvent.DispatcherState getKeyDispatcherState() {
      
                return mAttachInfo != null ? mAttachInfo.mKeyDispatchState : null;
      
            }
      
            /**
      
             * Dispatch a key event before it is processed by any input method
      
             * associated with the view hierarchy.  This can be used to intercept
      
             * key events in special situations before the IME consumes them; a
      
             * typical example would be handling the BACK key to update the application's
      
             * UI instead of allowing the IME to see it and close itself.
      
             *
      
             * @param event The key event to be dispatched.
      
             * @return True if the event was handled, false otherwise.
      
             */
      
            public boolean dispatchKeyEventPreIme(KeyEvent event) {
      
                return onKeyPreIme(event.getKeyCode(), event);
      
            }
      
            /**
      
             * Dispatch a key event to the next view on the focus path. This path runs
      
             * from the top of the view tree down to the currently focused view. If this
      
             * view has focus, it will dispatch to itself. Otherwise it will dispatch
      
             * the next node down the focus path. This method also fires any key
      
             * listeners.
      
             *
      
             * @param event The key event to be dispatched.
      
             * @return True if the event was handled, false otherwise.
      
             */
      
            public boolean dispatchKeyEvent(KeyEvent event) {
      
                if (mInputEventConsistencyVerifier != null) {
      
                    mInputEventConsistencyVerifier.onKeyEvent(event, 0);
      
                }
      
                // Give any attached key listener a first crack at the event.
      
                //noinspection SimplifiableIfStatement
      
                ListenerInfo li = mListenerInfo;
      
                if (li != null && li.mOnKeyListener != null && (mViewFlags & ENABLED_MASK) == ENABLED
      
                        && li.mOnKeyListener.onKey(this, event.getKeyCode(), event)) {
      
                    return true;
      
                }
      
                if (event.dispatch(this, mAttachInfo != null
      
                        ? mAttachInfo.mKeyDispatchState : null, this)) {
      
                    return true;
      
                }
      
                if (mInputEventConsistencyVerifier != null) {
      
                    mInputEventConsistencyVerifier.onUnhandledEvent(event, 0);
      
                }
      
                return false;
      
            }
      
            /**
      
             * Dispatches a key shortcut event.
      
             *
      
             * @param event The key event to be dispatched.
      
             * @return True if the event was handled by the view, false otherwise.
      
             */
      
            public boolean dispatchKeyShortcutEvent(KeyEvent event) {
      
                return onKeyShortcut(event.getKeyCode(), event);
      
            }
      
            /**
      
             * Pass the touch screen motion event down to the target view, or this
      
             * view if it is the target.
      
             *
      
             * @param event The motion event to be dispatched.
      
             * @return True if the event was handled by the view, false otherwise.
      
             */
      
            public boolean dispatchTouchEvent(MotionEvent event) {
      
                // If the event should be handled by accessibility focus first.
      
                if (event.isTargetAccessibilityFocus()) {
      
                    // We don't have focus or no virtual descendant has it, do not handle the event.
      
                    if (!isAccessibilityFocusedViewOrHost()) {
      
                        return false;
      
                    }
      
                    // We have focus and got the event, then use normal event dispatch.
      
                    event.setTargetAccessibilityFocus(false);
      
                }
      
                boolean result = false;
      
                if (mInputEventConsistencyVerifier != null) {
      
                    mInputEventConsistencyVerifier.onTouchEvent(event, 0);
      
                }
      
                final int actionMasked = event.getActionMasked();
      
                if (actionMasked == MotionEvent.ACTION_DOWN) {
      
                    // Defensive cleanup for new gesture
      
                    stopNestedScroll();
      
                }
      
                if (onFilterTouchEventForSecurity(event)) {
      
                    //noinspection SimplifiableIfStatement
      
                    ListenerInfo li = mListenerInfo;
      
                    if (li != null && li.mOnTouchListener != null
      
                            && (mViewFlags & ENABLED_MASK) == ENABLED
      
                            && li.mOnTouchListener.onTouch(this, event)) {
      
                        result = true;
      
                    }
      
                    if (!result && onTouchEvent(event)) {
      
                        result = true;
      
                    }
      
                }
      
                if (!result && mInputEventConsistencyVerifier != null) {
      
                    mInputEventConsistencyVerifier.onUnhandledEvent(event, 0);
      
                }
      
                // Clean up after nested scrolls if this is the end of a gesture;
      
                // also cancel it if we tried an ACTION_DOWN but we didn't want the rest
      
                // of the gesture.
      
                if (actionMasked == MotionEvent.ACTION_UP ||
      
                        actionMasked == MotionEvent.ACTION_CANCEL ||
      
                        (actionMasked == MotionEvent.ACTION_DOWN && !result)) {
      
                    stopNestedScroll();
      
                }
      
                return result;
      
            }
      
            boolean isAccessibilityFocusedViewOrHost() {
      
                return isAccessibilityFocused() || (getViewRootImpl() != null && getViewRootImpl()
      
                        .getAccessibilityFocusedHost() == this);
      
            }
      
            /**
      
             * Filter the touch event to apply security policies.
      
             *
      
             * @param event The motion event to be filtered.
      
             * @return True if the event should be dispatched, false if the event should be dropped.
      
             *
      
             * @see #getFilterTouchesWhenObscured
      
             */
      
            public boolean onFilterTouchEventForSecurity(MotionEvent event) {
      
                //noinspection RedundantIfStatement
      
                if ((mViewFlags & FILTER_TOUCHES_WHEN_OBSCURED) != 0
      
                        && (event.getFlags() & MotionEvent.FLAG_WINDOW_IS_OBSCURED) != 0) {
      
                    // Window is obscured, drop this touch.
      
                    return false;
      
                }
      
                return true;
      
            }
      
            /**
      
             * Pass a trackball motion event down to the focused view.
      
             *
      
             * @param event The motion event to be dispatched.
      
             * @return True if the event was handled by the view, false otherwise.
      
             */
      
            public boolean dispatchTrackballEvent(MotionEvent event) {
      
                if (mInputEventConsistencyVerifier != null) {
      
                    mInputEventConsistencyVerifier.onTrackballEvent(event, 0);
      
                }
      
                return onTrackballEvent(event);
      
            }
      
            /**
      
             * Dispatch a generic motion event.
      
             * <p>
      
             * Generic motion events with source class {@link InputDevice#SOURCE_CLASS_POINTER}
      
             * are delivered to the view under the pointer.  All other generic motion events are
      
             * delivered to the focused view.  Hover events are handled specially and are delivered
      
             * to {@link #onHoverEvent(MotionEvent)}.
      
             * </p>
      
             *
      
             * @param event The motion event to be dispatched.
      
             * @return True if the event was handled by the view, false otherwise.
      
             */
      
            public boolean dispatchGenericMotionEvent(MotionEvent event) {
      
                if (mInputEventConsistencyVerifier != null) {
      
                    mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0);
      
                }
      
                final int source = event.getSource();
      
                if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) {
      
                    final int action = event.getAction();
      
                    if (action == MotionEvent.ACTION_HOVER_ENTER
      
                            || action == MotionEvent.ACTION_HOVER_MOVE
      
                            || action == MotionEvent.ACTION_HOVER_EXIT) {
      
                        if (dispatchHoverEvent(event)) {
      
                            return true;
      
                        }
      
                    } else if (dispatchGenericPointerEvent(event)) {
      
                        return true;
      
                    }
      
                } else if (dispatchGenericFocusedEvent(event)) {
      
                    return true;
      
                }
      
                if (dispatchGenericMotionEventInternal(event)) {
      
                    return true;
      
                }
      
                if (mInputEventConsistencyVerifier != null) {
      
                    mInputEventConsistencyVerifier.onUnhandledEvent(event, 0);
      
                }
      
                return false;
      
            }
      
            private boolean dispatchGenericMotionEventInternal(MotionEvent event) {
      
                //noinspection SimplifiableIfStatement
      
                ListenerInfo li = mListenerInfo;
      
                if (li != null && li.mOnGenericMotionListener != null
      
                        && (mViewFlags & ENABLED_MASK) == ENABLED
      
                        && li.mOnGenericMotionListener.onGenericMotion(this, event)) {
      
                    return true;
      
                }
      
                if (onGenericMotionEvent(event)) {
      
                    return true;
      
                }
      
                final int actionButton = event.getActionButton();
      
                switch (event.getActionMasked()) {
      
                    case MotionEvent.ACTION_BUTTON_PRESS:
      
                        if (isContextClickable() && !mInContextButtonPress && !mHasPerformedLongPress
      
                                && (actionButton == MotionEvent.BUTTON_STYLUS_PRIMARY
      
                                || actionButton == MotionEvent.BUTTON_SECONDARY)) {
      
                            if (performContextClick()) {
      
                                mInContextButtonPress = true;
      
                                setPressed(true, event.getX(), event.getY());
      
                                removeTapCallback();
      
                                removeLongPressCallback();
      
                                return true;
      
                            }
      
                        }
      
                        break;
      
                    case MotionEvent.ACTION_BUTTON_RELEASE:
      
                        if (mInContextButtonPress && (actionButton == MotionEvent.BUTTON_STYLUS_PRIMARY
      
                                || actionButton == MotionEvent.BUTTON_SECONDARY)) {
      
                            mInContextButtonPress = false;
      
                            mIgnoreNextUpEvent = true;
      
                        }
      
                        break;
      
                }
      
                if (mInputEventConsistencyVerifier != null) {
      
                    mInputEventConsistencyVerifier.onUnhandledEvent(event, 0);
      
                }
      
                return false;
      
            }
      
            /**
      
             * Dispatch a hover event.
      
             * <p>
      
             * Do not call this method directly.
      
             * Call {@link #dispatchGenericMotionEvent(MotionEvent)} instead.
      
             * </p>
      
             *
      
             * @param event The motion event to be dispatched.
      
             * @return True if the event was handled by the view, false otherwise.
      
             */
      
            protected boolean dispatchHoverEvent(MotionEvent event) {
      
                ListenerInfo li = mListenerInfo;
      
                //noinspection SimplifiableIfStatement
      
                if (li != null && li.mOnHoverListener != null
      
                        && (mViewFlags & ENABLED_MASK) == ENABLED
      
                        && li.mOnHoverListener.onHover(this, event)) {
      
                    return true;
      
                }
      
                return onHoverEvent(event);
      
            }
      
            /**
      
             * Returns true if the view has a child to which it has recently sent
      
             * {@link MotionEvent#ACTION_HOVER_ENTER}.  If this view is hovered and
      
             * it does not have a hovered child, then it must be the innermost hovered view.
      
             * @hide
      
             */
      
            protected boolean hasHoveredChild() {
      
                return false;
      
            }
      
            /**
      
             * Dispatch a generic motion event to the view under the first pointer.
      
             * <p>
      
             * Do not call this method directly.
      
             * Call {@link #dispatchGenericMotionEvent(MotionEvent)} instead.
      
             * </p>
      
             *
      
             * @param event The motion event to be dispatched.
      
             * @return True if the event was handled by the view, false otherwise.
      
             */
      
            protected boolean dispatchGenericPointerEvent(MotionEvent event) {
      
                return false;
      
            }
      
            /**
      
             * Dispatch a generic motion event to the currently focused view.
      
             * <p>
      
             * Do not call this method directly.
      
             * Call {@link #dispatchGenericMotionEvent(MotionEvent)} instead.
      
             * </p>
      
             *
      
             * @param event The motion event to be dispatched.
      
             * @return True if the event was handled by the view, false otherwise.
      
             */
      
            protected boolean dispatchGenericFocusedEvent(MotionEvent event) {
      
                return false;
      
            }
      
            /**
      
             * Dispatch a pointer event.
      
             * <p>
      
             * Dispatches touch related pointer events to {@link #onTouchEvent(MotionEvent)} and all
      
             * other events to {@link #onGenericMotionEvent(MotionEvent)}.  This separation of concerns
      
             * reinforces the invariant that {@link #onTouchEvent(MotionEvent)} is really about touches
      
             * and should not be expected to handle other pointing device features.
      
             * </p>
      
             *
      
             * @param event The motion event to be dispatched.
      
             * @return True if the event was handled by the view, false otherwise.
      
             * @hide
      
             */
      
            public final boolean dispatchPointerEvent(MotionEvent event) {
      
                if (event.isTouchEvent()) {
      
                    return dispatchTouchEvent(event);
      
                } else {
      
                    return dispatchGenericMotionEvent(event);
      
                }
      
            }
      
            /**
      
             * Called when the window containing this view gains or loses window focus.
      
             * ViewGroups should override to route to their children.
      
             *
      
             * @param hasFocus True if the window containing this view now has focus,
      
             *        false otherwise.
      
             */
      
            public void dispatchWindowFocusChanged(boolean hasFocus) {
      
                onWindowFocusChanged(hasFocus);
      
            }
      
            /**
      
             * Called when the window containing this view gains or loses focus.  Note
      
             * that this is separate from view focus: to receive key events, both
      
             * your view and its window must have focus.  If a window is displayed
      
             * on top of yours that takes input focus, then your own window will lose
      
             * focus but the view focus will remain unchanged.
      
             *
      
             * @param hasWindowFocus True if the window containing this view now has
      
             *        focus, false otherwise.
      
             */
      
            public void onWindowFocusChanged(boolean hasWindowFocus) {
      
                InputMethodManager imm = InputMethodManager.peekInstance();
      
                if (!hasWindowFocus) {
      
                    if (isPressed()) {
      
                        setPressed(false);
      
                    }
      
                    if (imm != null && (mPrivateFlags & PFLAG_FOCUSED) != 0) {
      
                        imm.focusOut(this);
      
                    }
      
                    removeLongPressCallback();
      
                    removeTapCallback();
      
                    onFocusLost();
      
                } else if (imm != null && (mPrivateFlags & PFLAG_FOCUSED) != 0) {
      
                    imm.focusIn(this);
      
                }
      
                refreshDrawableState();
      
            }
      
            /**
      
             * Returns true if this view is in a window that currently has window focus.
      
             * Note that this is not the same as the view itself having focus.
      
             *
      
             * @return True if this view is in a window that currently has window focus.
      
             */
      
            public boolean hasWindowFocus() {
      
                return mAttachInfo != null && mAttachInfo.mHasWindowFocus;
      
            }
      
            /**
      
             * Dispatch a view visibility change down the view hierarchy.
      
             * ViewGroups should override to route to their children.
      
             * @param changedView The view whose visibility changed. Could be 'this' or
      
             * an ancestor view.
      
             * @param visibility The new visibility of changedView: {@link #VISIBLE},
      
             * {@link #INVISIBLE} or {@link #GONE}.
      
             */
      
            protected void dispatchVisibilityChanged(@NonNull View changedView,
      
                    @Visibility int visibility) {
      
                onVisibilityChanged(changedView, visibility);
      
            }
      
            /**
      
             * Called when the visibility of the view or an ancestor of the view has
      
             * changed.
      
             *
      
             * @param changedView The view whose visibility changed. May be
      
             *                    {@code this} or an ancestor view.
      
             * @param visibility The new visibility, one of {@link #VISIBLE},
      
             *                   {@link #INVISIBLE} or {@link #GONE}.
      
             */
      
            protected void onVisibilityChanged(@NonNull View changedView, @Visibility int visibility) {
      
                final boolean visible = visibility == VISIBLE && getVisibility() == VISIBLE;
      
                if (visible && mAttachInfo != null) {
      
                    initialAwakenScrollBars();
      
                }
      
                final Drawable dr = mBackground;
      
                if (dr != null && visible != dr.isVisible()) {
      
                    dr.setVisible(visible, false);
      
                }
      
                final Drawable fg = mForegroundInfo != null ? mForegroundInfo.mDrawable : null;
      
                if (fg != null && visible != fg.isVisible()) {
      
                    fg.setVisible(visible, false);
      
                }
      
            }
      
            /**
      
             * Dispatch a hint about whether this view is displayed. For instance, when
      
             * a View moves out of the screen, it might receives a display hint indicating
      
             * the view is not displayed. Applications should not <em>rely</em> on this hint
      
             * as there is no guarantee that they will receive one.
      
             *
      
             * @param hint A hint about whether or not this view is displayed:
      
             * {@link #VISIBLE} or {@link #INVISIBLE}.
      
             */
      
            public void dispatchDisplayHint(@Visibility int hint) {
      
                onDisplayHint(hint);
      
            }
      
            /**
      
             * Gives this view a hint about whether is displayed or not. For instance, when
      
             * a View moves out of the screen, it might receives a display hint indicating
      
             * the view is not displayed. Applications should not <em>rely</em> on this hint
      
             * as there is no guarantee that they will receive one.
      
             *
      
             * @param hint A hint about whether or not this view is displayed:
      
             * {@link #VISIBLE} or {@link #INVISIBLE}.
      
             */
      
            protected void onDisplayHint(@Visibility int hint) {
      
            }
      
            /**
      
             * Dispatch a window visibility change down the view hierarchy.
      
             * ViewGroups should override to route to their children.
      
             *
      
             * @param visibility The new visibility of the window.
      
             *
      
             * @see #onWindowVisibilityChanged(int)
      
             */
      
            public void dispatchWindowVisibilityChanged(@Visibility int visibility) {
      
                onWindowVisibilityChanged(visibility);
      
            }
      
            /**
      
             * Called when the window containing has change its visibility
      
             * (between {@link #GONE}, {@link #INVISIBLE}, and {@link #VISIBLE}).  Note
      
             * that this tells you whether or not your window is being made visible
      
             * to the window manager; this does <em>not</em> tell you whether or not
      
             * your window is obscured by other windows on the screen, even if it
      
             * is itself visible.
      
             *
      
             * @param visibility The new visibility of the window.
      
             */
      
            protected void onWindowVisibilityChanged(@Visibility int visibility) {
      
                if (visibility == VISIBLE) {
      
                    initialAwakenScrollBars();
      
                }
      
            }
      
            /**
      
             * Returns the current visibility of the window this view is attached to
      
             * (either {@link #GONE}, {@link #INVISIBLE}, or {@link #VISIBLE}).
      
             *
      
             * @return Returns the current visibility of the view's window.
      
             */
      
            @Visibility
      
            public int getWindowVisibility() {
      
                return mAttachInfo != null ? mAttachInfo.mWindowVisibility : GONE;
      
            }
      
            /**
      
             * Retrieve the overall visible display size in which the window this view is
      
             * attached to has been positioned in.  This takes into account screen
      
             * decorations above the window, for both cases where the window itself
      
             * is being position inside of them or the window is being placed under
      
             * then and covered insets are used for the window to position its content
      
             * inside.  In effect, this tells you the available area where content can
      
             * be placed and remain visible to users.
      
             *
      
             * <p>This function requires an IPC back to the window manager to retrieve
      
             * the requested information, so should not be used in performance critical
      
             * code like drawing.
      
             *
      
             * @param outRect Filled in with the visible display frame.  If the view
      
             * is not attached to a window, this is simply the raw display size.
      
             */
      
            public void getWindowVisibleDisplayFrame(Rect outRect) {
      
                if (mAttachInfo != null) {
      
                    try {
      
                        mAttachInfo.mSession.getDisplayFrame(mAttachInfo.mWindow, outRect);
      
                    } catch (RemoteException e) {
      
                        return;
      
                    }
      
                    // XXX This is really broken, and probably all needs to be done
      
                    // in the window manager, and we need to know more about whether
      
                    // we want the area behind or in front of the IME.
      
                    final Rect insets = mAttachInfo.mVisibleInsets;
      
                    outRect.left += insets.left;
      
                    outRect.top += insets.top;
      
                    outRect.right -= insets.right;
      
                    outRect.bottom -= insets.bottom;
      
                    return;
      
                }
      
                // The view is not attached to a display so we don't have a context.
      
                // Make a best guess about the display size.
      
                Display d = DisplayManagerGlobal.getInstance().getRealDisplay(Display.DEFAULT_DISPLAY);
      
                d.getRectSize(outRect);
      
            }
      
            /**
      
             * Dispatch a notification about a resource configuration change down
      
             * the view hierarchy.
      
             * ViewGroups should override to route to their children.
      
             *
      
             * @param newConfig The new resource configuration.
      
             *
      
             * @see #onConfigurationChanged(android.content.res.Configuration)
      
             */
      
            public void dispatchConfigurationChanged(Configuration newConfig) {
      
                onConfigurationChanged(newConfig);
      
            }
      
            /**
      
             * Called when the current configuration of the resources being used
      
             * by the application have changed.  You can use this to decide when
      
             * to reload resources that can changed based on orientation and other
      
             * configuration characteristics.  You only need to use this if you are
      
             * not relying on the normal {@link android.app.Activity} mechanism of
      
             * recreating the activity instance upon a configuration change.
      
             *
      
             * @param newConfig The new resource configuration.
      
             */
      
            protected void onConfigurationChanged(Configuration newConfig) {
      
            }
      
            /**
      
             * Private function to aggregate all per-view attributes in to the view
      
             * root.
      
             */
      
            void dispatchCollectViewAttributes(AttachInfo attachInfo, int visibility) {
      
                performCollectViewAttributes(attachInfo, visibility);
      
            }
      
            void performCollectViewAttributes(AttachInfo attachInfo, int visibility) {
      
                if ((visibility & VISIBILITY_MASK) == VISIBLE) {
      
                    if ((mViewFlags & KEEP_SCREEN_ON) == KEEP_SCREEN_ON) {
      
                        attachInfo.mKeepScreenOn = true;
      
                    }
      
                    attachInfo.mSystemUiVisibility |= mSystemUiVisibility;
      
                    ListenerInfo li = mListenerInfo;
      
                    if (li != null && li.mOnSystemUiVisibilityChangeListener != null) {
      
                        attachInfo.mHasSystemUiListeners = true;
      
                    }
      
                }
      
            }
      
            void needGlobalAttributesUpdate(boolean force) {
      
                final AttachInfo ai = mAttachInfo;
      
                if (ai != null && !ai.mRecomputeGlobalAttributes) {
      
                    if (force || ai.mKeepScreenOn || (ai.mSystemUiVisibility != 0)
      
                            || ai.mHasSystemUiListeners) {
      
                        ai.mRecomputeGlobalAttributes = true;
      
                    }
      
                }
      
            }
      
            /**
      
             * Returns whether the device is currently in touch mode.  Touch mode is entered
      
             * once the user begins interacting with the device by touch, and affects various
      
             * things like whether focus is always visible to the user.
      
             *
      
             * @return Whether the device is in touch mode.
      
             */
      
            @ViewDebug.ExportedProperty
      
            public boolean isInTouchMode() {
      
                if (mAttachInfo != null) {
      
                    return mAttachInfo.mInTouchMode;
      
                } else {
      
                    return ViewRootImpl.isInTouchMode();
      
                }
      
            }
      
            /**
      
             * Returns the context the view is running in, through which it can
      
             * access the current theme, resources, etc.
      
             *
      
             * @return The view's Context.
      
             */
      
            @ViewDebug.CapturedViewProperty
      
            public final Context getContext() {
      
                return mContext;
      
            }
      
            /**
      
             * Handle a key event before it is processed by any input method
      
             * associated with the view hierarchy.  This can be used to intercept
      
             * key events in special situations before the IME consumes them; a
      
             * typical example would be handling the BACK key to update the application's
      
             * UI instead of allowing the IME to see it and close itself.
      
             *
      
             * @param keyCode The value in event.getKeyCode().
      
             * @param event Description of the key event.
      
             * @return If you handled the event, return true. If you want to allow the
      
             *         event to be handled by the next receiver, return false.
      
             */
      
            public boolean onKeyPreIme(int keyCode, KeyEvent event) {
      
                return false;
      
            }
      
            /**
      
             * Default implementation of {@link KeyEvent.Callback#onKeyDown(int, KeyEvent)
      
             * KeyEvent.Callback.onKeyDown()}: perform press of the view
      
             * when {@link KeyEvent#KEYCODE_DPAD_CENTER} or {@link KeyEvent#KEYCODE_ENTER}
      
             * is released, if the view is enabled and clickable.
      
             *
      
             * <p>Key presses in software keyboards will generally NOT trigger this listener,
      
             * although some may elect to do so in some situations. Do not rely on this to
      
             * catch software key presses.
      
             *
      
             * @param keyCode A key code that represents the button pressed, from
      
             *                {@link android.view.KeyEvent}.
      
             * @param event   The KeyEvent object that defines the button action.
      
             */
      
            public boolean onKeyDown(int keyCode, KeyEvent event) {
      
                boolean result = false;
      
                if (KeyEvent.isConfirmKey(keyCode)) {
      
                    if ((mViewFlags & ENABLED_MASK) == DISABLED) {
      
                        return true;
      
                    }
      
                    // Long clickable items don't necessarily have to be clickable
      
                    if (((mViewFlags & CLICKABLE) == CLICKABLE ||
      
                            (mViewFlags & LONG_CLICKABLE) == LONG_CLICKABLE) &&
      
                            (event.getRepeatCount() == 0)) {
      
                        setPressed(true);
      
                        checkForLongClick(0);
      
                        return true;
      
                    }
      
                }
      
                return result;
      
            }
      
            /**
      
             * Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent)
      
             * KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle
      
             * the event).
      
             * <p>Key presses in software keyboards will generally NOT trigger this listener,
      
             * although some may elect to do so in some situations. Do not rely on this to
      
             * catch software key presses.
      
             */
      
            public boolean onKeyLongPress(int keyCode, KeyEvent event) {
      
                return false;
      
            }
      
            /**
      
             * Default implementation of {@link KeyEvent.Callback#onKeyUp(int, KeyEvent)
      
             * KeyEvent.Callback.onKeyUp()}: perform clicking of the view
      
             * when {@link KeyEvent#KEYCODE_DPAD_CENTER} or
      
             * {@link KeyEvent#KEYCODE_ENTER} is released.
      
             * <p>Key presses in software keyboards will generally NOT trigger this listener,
      
             * although some may elect to do so in some situations. Do not rely on this to
      
             * catch software key presses.
      
             *
      
             * @param keyCode A key code that represents the button pressed, from
      
             *                {@link android.view.KeyEvent}.
      
             * @param event   The KeyEvent object that defines the button action.
      
             */
      
            public boolean onKeyUp(int keyCode, KeyEvent event) {
      
                if (KeyEvent.isConfirmKey(keyCode)) {
      
                    if ((mViewFlags & ENABLED_MASK) == DISABLED) {
      
                        return true;
      
                    }
      
                    if ((mViewFlags & CLICKABLE) == CLICKABLE && isPressed()) {
      
                        setPressed(false);
      
                        if (!mHasPerformedLongPress) {
      
                            // This is a tap, so remove the longpress check
      
                            removeLongPressCallback();
      
                            return performClick();
      
                        }
      
                    }
      
                }
      
                return false;
      
            }
      
            /**
      
             * Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent)
      
             * KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle
      
             * the event).
      
             * <p>Key presses in software keyboards will generally NOT trigger this listener,
      
             * although some may elect to do so in some situations. Do not rely on this to
      
             * catch software key presses.
      
             *
      
             * @param keyCode     A key code that represents the button pressed, from
      
             *                    {@link android.view.KeyEvent}.
      
             * @param repeatCount The number of times the action was made.
      
             * @param event       The KeyEvent object that defines the button action.
      
             */
      
            public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
      
                return false;
      
            }
      
            /**
      
             * Called on the focused view when a key shortcut event is not handled.
      
             * Override this method to implement local key shortcuts for the View.
      
             * Key shortcuts can also be implemented by setting the
      
             * {@link MenuItem#setShortcut(char, char) shortcut} property of menu items.
      
             *
      
             * @param keyCode The value in event.getKeyCode().
      
             * @param event Description of the key event.
      
             * @return If you handled the event, return true. If you want to allow the
      
             *         event to be handled by the next receiver, return false.
      
             */
      
            public boolean onKeyShortcut(int keyCode, KeyEvent event) {
      
                return false;
      
            }
      
            /**
      
             * Check whether the called view is a text editor, in which case it
      
             * would make sense to automatically display a soft input window for
      
             * it.  Subclasses should override this if they implement
      
             * {@link #onCreateInputConnection(EditorInfo)} to return true if
      
             * a call on that method would return a non-null InputConnection, and
      
             * they are really a first-class editor that the user would normally
      
             * start typing on when the go into a window containing your view.
      
             *
      
             * <p>The default implementation always returns false.  This does
      
             * <em>not</em> mean that its {@link #onCreateInputConnection(EditorInfo)}
      
             * will not be called or the user can not otherwise perform edits on your
      
             * view; it is just a hint to the system that this is not the primary
      
             * purpose of this view.
      
             *
      
             * @return Returns true if this view is a text editor, else false.
      
             */
      
            public boolean onCheckIsTextEditor() {
      
                return false;
      
            }
      
            /**
      
             * Create a new InputConnection for an InputMethod to interact
      
             * with the view.  The default implementation returns null, since it doesn't
      
             * support input methods.  You can override this to implement such support.
      
             * This is only needed for views that take focus and text input.
      
             *
      
             * <p>When implementing this, you probably also want to implement
      
             * {@link #onCheckIsTextEditor()} to indicate you will return a
      
             * non-null InputConnection.</p>
      
             *
      
             * <p>Also, take good care to fill in the {@link android.view.inputmethod.EditorInfo}
      
             * object correctly and in its entirety, so that the connected IME can rely
      
             * on its values. For example, {@link android.view.inputmethod.EditorInfo#initialSelStart}
      
             * and  {@link android.view.inputmethod.EditorInfo#initialSelEnd} members
      
             * must be filled in with the correct cursor position for IMEs to work correctly
      
             * with your application.</p>
      
             *
      
             * @param outAttrs Fill in with attribute information about the connection.
      
             */
      
            public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
      
                return null;
      
            }
      
            /**
      
             * Called by the {@link android.view.inputmethod.InputMethodManager}
      
             * when a view who is not the current
      
             * input connection target is trying to make a call on the manager.  The
      
             * default implementation returns false; you can override this to return
      
             * true for certain views if you are performing InputConnection proxying
      
             * to them.
      
             * @param view The View that is making the InputMethodManager call.
      
             * @return Return true to allow the call, false to reject.
      
             */
      
            public boolean checkInputConnectionProxy(View view) {
      
                return false;
      
            }
      
            /**
      
             * Show the context menu for this view. It is not safe to hold on to the
      
             * menu after returning from this method.
      
             *
      
             * You should normally not overload this method. Overload
      
             * {@link #onCreateContextMenu(ContextMenu)} or define an
      
             * {@link OnCreateContextMenuListener} to add items to the context menu.
      
             *
      
             * @param menu The context menu to populate
      
             */
      
            public void createContextMenu(ContextMenu menu) {
      
                ContextMenuInfo menuInfo = getContextMenuInfo();
      
                // Sets the current menu info so all items added to menu will have
      
                // my extra info set.
      
                ((MenuBuilder)menu).setCurrentMenuInfo(menuInfo);
      
                onCreateContextMenu(menu);
      
                ListenerInfo li = mListenerInfo;
      
                if (li != null && li.mOnCreateContextMenuListener != null) {
      
                    li.mOnCreateContextMenuListener.onCreateContextMenu(menu, this, menuInfo);
      
                }
      
                // Clear the extra information so subsequent items that aren't mine don't
      
                // have my extra info.
      
                ((MenuBuilder)menu).setCurrentMenuInfo(null);
      
                if (mParent != null) {
      
                    mParent.createContextMenu(menu);
      
                }
      
            }
      
            /**
      
             * Views should implement this if they have extra information to associate
      
             * with the context menu. The return result is supplied as a parameter to
      
             * the {@link OnCreateContextMenuListener#onCreateContextMenu(ContextMenu, View, ContextMenuInfo)}
      
             * callback.
      
             *
      
             * @return Extra information about the item for which the context menu
      
             *         should be shown. This information will vary across different
      
             *         subclasses of View.
      
             */
      
            protected ContextMenuInfo getContextMenuInfo() {
      
                return null;
      
            }
      
            /**
      
             * Views should implement this if the view itself is going to add items to
      
             * the context menu.
      
             *
      
             * @param menu the context menu to populate
      
             */
      
            protected void onCreateContextMenu(ContextMenu menu) {
      
            }
      
            /**
      
             * Implement this method to handle trackball motion events.  The
      
             * <em>relative</em> movement of the trackball since the last event
      
             * can be retrieve with {@link MotionEvent#getX MotionEvent.getX()} and
      
             * {@link MotionEvent#getY MotionEvent.getY()}.  These are normalized so
      
             * that a movement of 1 corresponds to the user pressing one DPAD key (so
      
             * they will often be fractional values, representing the more fine-grained
      
             * movement information available from a trackball).
      
             *
      
             * @param event The motion event.
      
             * @return True if the event was handled, false otherwise.
      
             */
      
            public boolean onTrackballEvent(MotionEvent event) {
      
                return false;
      
            }
      
            /**
      
             * Implement this method to handle generic motion events.
      
             * <p>
      
             * Generic motion events describe joystick movements, mouse hovers, track pad
      
             * touches, scroll wheel movements and other input events.  The
      
             * {@link MotionEvent#getSource() source} of the motion event specifies
      
             * the class of input that was received.  Implementations of this method
      
             * must examine the bits in the source before processing the event.
      
             * The following code example shows how this is done.
      
             * </p><p>
      
             * Generic motion events with source class {@link InputDevice#SOURCE_CLASS_POINTER}
      
             * are delivered to the view under the pointer.  All other generic motion events are
      
             * delivered to the focused view.
      
             * </p>
      
             * <pre> public boolean onGenericMotionEvent(MotionEvent event) {
      
             *     if (event.isFromSource(InputDevice.SOURCE_CLASS_JOYSTICK)) {
      
             *         if (event.getAction() == MotionEvent.ACTION_MOVE) {
      
             *             // process the joystick movement...
      
             *             return true;
      
             *         }
      
             *     }
      
             *     if (event.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) {
      
             *         switch (event.getAction()) {
      
             *             case MotionEvent.ACTION_HOVER_MOVE:
      
             *                 // process the mouse hover movement...
      
             *                 return true;
      
             *             case MotionEvent.ACTION_SCROLL:
      
             *                 // process the scroll wheel movement...
      
             *                 return true;
      
             *         }
      
             *     }
      
             *     return super.onGenericMotionEvent(event);
      
             * }</pre>
      
             *
      
             * @param event The generic motion event being processed.
      
             * @return True if the event was handled, false otherwise.
      
             */
      
            public boolean onGenericMotionEvent(MotionEvent event) {
      
                return false;
      
            }
      
            /**
      
             * Implement this method to handle hover events.
      
             * <p>
      
             * This method is called whenever a pointer is hovering into, over, or out of the
      
             * bounds of a view and the view is not currently being touched.
      
             * Hover events are represented as pointer events with action
      
             * {@link MotionEvent#ACTION_HOVER_ENTER}, {@link MotionEvent#ACTION_HOVER_MOVE},
      
             * or {@link MotionEvent#ACTION_HOVER_EXIT}.
      
             * </p>
      
             * <ul>
      
             * <li>The view receives a hover event with action {@link MotionEvent#ACTION_HOVER_ENTER}
      
             * when the pointer enters the bounds of the view.</li>
      
             * <li>The view receives a hover event with action {@link MotionEvent#ACTION_HOVER_MOVE}
      
             * when the pointer has already entered the bounds of the view and has moved.</li>
      
             * <li>The view receives a hover event with action {@link MotionEvent#ACTION_HOVER_EXIT}
      
             * when the pointer has exited the bounds of the view or when the pointer is
      
             * about to go down due to a button click, tap, or similar user action that
      
             * causes the view to be touched.</li>
      
             * </ul>
      
             * <p>
      
             * The view should implement this method to return true to indicate that it is
      
             * handling the hover event, such as by changing its drawable state.
      
             * </p><p>
      
             * The default implementation calls {@link #setHovered} to update the hovered state
      
             * of the view when a hover enter or hover exit event is received, if the view
      
             * is enabled and is clickable.  The default implementation also sends hover
      
             * accessibility events.
      
             * </p>
      
             *
      
             * @param event The motion event that describes the hover.
      
             * @return True if the view handled the hover event.
      
             *
      
             * @see #isHovered
      
             * @see #setHovered
      
             * @see #onHoverChanged
      
             */
      
            public boolean onHoverEvent(MotionEvent event) {
      
                // The root view may receive hover (or touch) events that are outside the bounds of
      
                // the window.  This code ensures that we only send accessibility events for
      
                // hovers that are actually within the bounds of the root view.
      
                final int action = event.getActionMasked();
      
                if (!mSendingHoverAccessibilityEvents) {
      
                    if ((action == MotionEvent.ACTION_HOVER_ENTER
      
                            || action == MotionEvent.ACTION_HOVER_MOVE)
      
                            && !hasHoveredChild()
      
                            && pointInView(event.getX(), event.getY())) {
      
                        sendAccessibilityHoverEvent(AccessibilityEvent.TYPE_VIEW_HOVER_ENTER);
      
                        mSendingHoverAccessibilityEvents = true;
      
                    }
      
                } else {
      
                    if (action == MotionEvent.ACTION_HOVER_EXIT
      
                            || (action == MotionEvent.ACTION_MOVE
      
                                    && !pointInView(event.getX(), event.getY()))) {
      
                        mSendingHoverAccessibilityEvents = false;
      
                        sendAccessibilityHoverEvent(AccessibilityEvent.TYPE_VIEW_HOVER_EXIT);
      
                    }
      
                }
      
                if (isHoverable()) {
      
                    switch (action) {
      
                        case MotionEvent.ACTION_HOVER_ENTER:
      
                            setHovered(true);
      
                            break;
      
                        case MotionEvent.ACTION_HOVER_EXIT:
      
                            setHovered(false);
      
                            break;
      
                    }
      
                    // Dispatch the event to onGenericMotionEvent before returning true.
      
                    // This is to provide compatibility with existing applications that
      
                    // handled HOVER_MOVE events in onGenericMotionEvent and that would
      
                    // break because of the new default handling for hoverable views
      
                    // in onHoverEvent.
      
                    // Note that onGenericMotionEvent will be called by default when
      
                    // onHoverEvent returns false (refer to dispatchGenericMotionEvent).
      
                    dispatchGenericMotionEventInternal(event);
      
                    // The event was already handled by calling setHovered(), so always
      
                    // return true.
      
                    return true;
      
                }
      
                return false;
      
            }
      
            /**
      
             * Returns true if the view should handle {@link #onHoverEvent}
      
             * by calling {@link #setHovered} to change its hovered state.
      
             *
      
             * @return True if the view is hoverable.
      
             */
      
            private boolean isHoverable() {
      
                final int viewFlags = mViewFlags;
      
                if ((viewFlags & ENABLED_MASK) == DISABLED) {
      
                    return false;
      
                }
      
                return (viewFlags & CLICKABLE) == CLICKABLE
      
                        || (viewFlags & LONG_CLICKABLE) == LONG_CLICKABLE
      
                        || (viewFlags & CONTEXT_CLICKABLE) == CONTEXT_CLICKABLE;
      
            }
      
            /**
      
             * Returns true if the view is currently hovered.
      
             *
      
             * @return True if the view is currently hovered.
      
             *
      
             * @see #setHovered
      
             * @see #onHoverChanged
      
             */
      
            @ViewDebug.ExportedProperty
      
            public boolean isHovered() {
      
                return (mPrivateFlags & PFLAG_HOVERED) != 0;
      
            }
      
            /**
      
             * Sets whether the view is currently hovered.
      
             * <p>
      
             * Calling this method also changes the drawable state of the view.  This
      
             * enables the view to react to hover by using different drawable resources
      
             * to change its appearance.
      
             * </p><p>
      
             * The {@link #onHoverChanged} method is called when the hovered state changes.
      
             * </p>
      
             *
      
             * @param hovered True if the view is hovered.
      
             *
      
             * @see #isHovered
      
             * @see #onHoverChanged
      
             */
      
            public void setHovered(boolean hovered) {
      
                if (hovered) {
      
                    if ((mPrivateFlags & PFLAG_HOVERED) == 0) {
      
                        mPrivateFlags |= PFLAG_HOVERED;
      
                        refreshDrawableState();
      
                        onHoverChanged(true);
      
                    }
      
                } else {
      
                    if ((mPrivateFlags & PFLAG_HOVERED) != 0) {
      
                        mPrivateFlags &= ~PFLAG_HOVERED;
      
                        refreshDrawableState();
      
                        onHoverChanged(false);
      
                    }
      
                }
      
            }
      
            /**
      
             * Implement this method to handle hover state changes.
      
             * <p>
      
             * This method is called whenever the hover state changes as a result of a
      
             * call to {@link #setHovered}.
      
             * </p>
      
             *
      
             * @param hovered The current hover state, as returned by {@link #isHovered}.
      
             *
      
             * @see #isHovered
      
             * @see #setHovered
      
             */
      
            public void onHoverChanged(boolean hovered) {
      
            }
      
            /**
      
             * Implement this method to handle touch screen motion events.
      
             * <p>
      
             * If this method is used to detect click actions, it is recommended that
      
             * the actions be performed by implementing and calling
      
             * {@link #performClick()}. This will ensure consistent system behavior,
      
             * including:
      
             * <ul>
      
             * <li>obeying click sound preferences
      
             * <li>dispatching OnClickListener calls
      
             * <li>handling {@link AccessibilityNodeInfo#ACTION_CLICK ACTION_CLICK} when
      
             * accessibility features are enabled
      
             * </ul>
      
             *
      
             * @param event The motion event.
      
             * @return True if the event was handled, false otherwise.
      
             */
      
            public boolean onTouchEvent(MotionEvent event) {
      
                final float x = event.getX();
      
                final float y = event.getY();
      
                final int viewFlags = mViewFlags;
      
                final int action = event.getAction();
      
                if ((viewFlags & ENABLED_MASK) == DISABLED) {
      
                    if (action == MotionEvent.ACTION_UP && (mPrivateFlags & PFLAG_PRESSED) != 0) {
      
                        setPressed(false);
      
                    }
      
                    // A disabled view that is clickable still consumes the touch
      
                    // events, it just doesn't respond to them.
      
                    return (((viewFlags & CLICKABLE) == CLICKABLE
      
                            || (viewFlags & LONG_CLICKABLE) == LONG_CLICKABLE)
      
                            || (viewFlags & CONTEXT_CLICKABLE) == CONTEXT_CLICKABLE);
      
                }
      
                if (mTouchDelegate != null) {
      
                    if (mTouchDelegate.onTouchEvent(event)) {
      
                        return true;
      
                    }
      
                }
      
                if (((viewFlags & CLICKABLE) == CLICKABLE ||
      
                        (viewFlags & LONG_CLICKABLE) == LONG_CLICKABLE) ||
      
                        (viewFlags & CONTEXT_CLICKABLE) == CONTEXT_CLICKABLE) {
      
                    switch (action) {
      
                        case MotionEvent.ACTION_UP:
      
                            boolean prepressed = (mPrivateFlags & PFLAG_PREPRESSED) != 0;
      
                            if ((mPrivateFlags & PFLAG_PRESSED) != 0 || prepressed) {
      
                                // take focus if we don't have it already and we should in
      
                                // touch mode.
      
                                boolean focusTaken = false;
      
                                if (isFocusable() && isFocusableInTouchMode() && !isFocused()) {
      
                                    focusTaken = requestFocus();
      
                                }
      
                                if (prepressed) {
      
                                    // The button is being released before we actually
      
                                    // showed it as pressed.  Make it show the pressed
      
                                    // state now (before scheduling the click) to ensure
      
                                    // the user sees it.
      
                                    setPressed(true, x, y);
      
                               }
      
                                if (!mHasPerformedLongPress && !mIgnoreNextUpEvent) {
      
                                    // This is a tap, so remove the longpress check
      
                                    removeLongPressCallback();
      
                                    // Only perform take click actions if we were in the pressed state
      
                                    if (!focusTaken) {
      
                                        // Use a Runnable and post this rather than calling
      
                                        // performClick directly. This lets other visual state
      
                                        // of the view update before click actions start.
      
                                        if (mPerformClick == null) {
      
                                            mPerformClick = new PerformClick();
      
                                        }
      
                                        if (!post(mPerformClick)) {
      
                                            performClick();
      
                                        }
      
                                    }
      
                                }
      
                                if (mUnsetPressedState == null) {
      
                                    mUnsetPressedState = new UnsetPressedState();
      
                                }
      
                                if (prepressed) {
      
                                    postDelayed(mUnsetPressedState,
      
                                            ViewConfiguration.getPressedStateDuration());
      
                                } else if (!post(mUnsetPressedState)) {
      
                                    // If the post failed, unpress right now
      
                                    mUnsetPressedState.run();
      
                                }
      
                                removeTapCallback();
      
                            }
      
                            mIgnoreNextUpEvent = false;
      
                            break;
      
                        case MotionEvent.ACTION_DOWN:
      
                            mHasPerformedLongPress = false;
      
                            if (performButtonActionOnTouchDown(event)) {
      
                                break;
      
                            }
      
                            // Walk up the hierarchy to determine if we're inside a scrolling container.
      
                            boolean isInScrollingContainer = isInScrollingContainer();
      
                            // For views inside a scrolling container, delay the pressed feedback for
      
                            // a short period in case this is a scroll.
      
                            if (isInScrollingContainer) {
      
                                mPrivateFlags |= PFLAG_PREPRESSED;
      
                                if (mPendingCheckForTap == null) {
      
                                    mPendingCheckForTap = new CheckForTap();
      
                                }
      
                                mPendingCheckForTap.x = event.getX();
      
                                mPendingCheckForTap.y = event.getY();
      
                                postDelayed(mPendingCheckForTap, ViewConfiguration.getTapTimeout());
      
                            } else {
      
                                // Not inside a scrolling container, so show the feedback right away
      
                                setPressed(true, x, y);
      
                                checkForLongClick(0);
      
                            }
      
                            break;
      
                        case MotionEvent.ACTION_CANCEL:
      
                            setPressed(false);
      
                            removeTapCallback();
      
                            removeLongPressCallback();
      
                            mInContextButtonPress = false;
      
                            mHasPerformedLongPress = false;
      
                            mIgnoreNextUpEvent = false;
      
                            break;
      
                        case MotionEvent.ACTION_MOVE:
      
                            drawableHotspotChanged(x, y);
      
                            // Be lenient about moving outside of buttons
      
                            if (!pointInView(x, y, mTouchSlop)) {
      
                                // Outside button
      
                                removeTapCallback();
      
                                if ((mPrivateFlags & PFLAG_PRESSED) != 0) {
      
                                    // Remove any future long press/tap checks
      
                                    removeLongPressCallback();
      
                                    setPressed(false);
      
                                }
      
                            }
      
                            break;
      
                    }
      
                    return true;
      
                }
      
                return false;
      
            }
      
            /**
      
             * @hide
      
             */
      
            public boolean isInScrollingContainer() {
      
                ViewParent p = getParent();
      
                while (p != null && p instanceof ViewGroup) {
      
                    if (((ViewGroup) p).shouldDelayChildPressedState()) {
      
                        return true;
      
                    }
      
                    p = p.getParent();
      
                }
      
                return false;
      
            }
      
            /**
      
             * Remove the longpress detection timer.
      
             */
      
            private void removeLongPressCallback() {
      
                if (mPendingCheckForLongPress != null) {
      
                  removeCallbacks(mPendingCheckForLongPress);
      
                }
      
            }
      
            /**
      
             * Remove the pending click action
      
             */
      
            private void removePerformClickCallback() {
      
                if (mPerformClick != null) {
      
                    removeCallbacks(mPerformClick);
      
                }
      
            }
      
            /**
      
             * Remove the prepress detection timer.
      
             */
      
            private void removeUnsetPressCallback() {
      
                if ((mPrivateFlags & PFLAG_PRESSED) != 0 && mUnsetPressedState != null) {
      
                    setPressed(false);
      
                    removeCallbacks(mUnsetPressedState);
      
                }
      
            }
      
            /**
      
             * Remove the tap detection timer.
      
             */
      
            private void removeTapCallback() {
      
                if (mPendingCheckForTap != null) {
      
                    mPrivateFlags &= ~PFLAG_PREPRESSED;
      
                    removeCallbacks(mPendingCheckForTap);
      
                }
      
            }
      
            /**
      
             * Cancels a pending long press.  Your subclass can use this if you
      
             * want the context menu to come up if the user presses and holds
      
             * at the same place, but you don't want it to come up if they press
      
             * and then move around enough to cause scrolling.
      
             */
      
            public void cancelLongPress() {
      
                removeLongPressCallback();
      
                /*
      
                 * The prepressed state handled by the tap callback is a display
      
                 * construct, but the tap callback will post a long press callback
      
                 * less its own timeout. Remove it here.
      
                 */
      
                removeTapCallback();
      
            }
      
            /**
      
             * Remove the pending callback for sending a
      
             * {@link AccessibilityEvent#TYPE_VIEW_SCROLLED} accessibility event.
      
             */
      
            private void removeSendViewScrolledAccessibilityEventCallback() {
      
                if (mSendViewScrolledAccessibilityEvent != null) {
      
                    removeCallbacks(mSendViewScrolledAccessibilityEvent);
      
                    mSendViewScrolledAccessibilityEvent.mIsPending = false;
      
                }
      
            }
      
            /**
      
             * Sets the TouchDelegate for this View.
      
             */
      
            public void setTouchDelegate(TouchDelegate delegate) {
      
                mTouchDelegate = delegate;
      
            }
      
            /**
      
             * Gets the TouchDelegate for this View.
      
             */
      
            public TouchDelegate getTouchDelegate() {
      
                return mTouchDelegate;
      
            }
      
            /**
      
             * Request unbuffered dispatch of the given stream of MotionEvents to this View.
      
             *
      
             * Until this View receives a corresponding {@link MotionEvent#ACTION_UP}, ask that the input
      
             * system not batch {@link MotionEvent}s but instead deliver them as soon as they're
      
             * available. This method should only be called for touch events.
      
             *
      
             * <p class="note">This api is not intended for most applications. Buffered dispatch
      
             * provides many of benefits, and just requesting unbuffered dispatch on most MotionEvent
      
             * streams will not improve your input latency. Side effects include: increased latency,
      
             * jittery scrolls and inability to take advantage of system resampling. Talk to your input
      
             * professional to see if {@link #requestUnbufferedDispatch(MotionEvent)} is right for
      
             * you.</p>
      
             */
      
            public final void requestUnbufferedDispatch(MotionEvent event) {
      
                final int action = event.getAction();
      
                if (mAttachInfo == null
      
                        || action != MotionEvent.ACTION_DOWN && action != MotionEvent.ACTION_MOVE
      
                        || !event.isTouchEvent()) {
      
                    return;
      
                }
      
                mAttachInfo.mUnbufferedDispatchRequested = true;
      
            }
      
            /**
      
             * Set flags controlling behavior of this view.
      
             *
      
             * @param flags Constant indicating the value which should be set
      
             * @param mask Constant indicating the bit range that should be changed
      
             */
      
            void setFlags(int flags, int mask) {
      
                final boolean accessibilityEnabled =
      
                        AccessibilityManager.getInstance(mContext).isEnabled();
      
                final boolean oldIncludeForAccessibility = accessibilityEnabled && includeForAccessibility();
      
                int old = mViewFlags;
      
                mViewFlags = (mViewFlags & ~mask) | (flags & mask);
      
                int changed = mViewFlags ^ old;
      
                if (changed == 0) {
      
                    return;
      
                }
      
                int privateFlags = mPrivateFlags;
      
                /* Check if the FOCUSABLE bit has changed */
      
                if (((changed & FOCUSABLE_MASK) != 0) &&
      
                        ((privateFlags & PFLAG_HAS_BOUNDS) !=0)) {
      
                    if (((old & FOCUSABLE_MASK) == FOCUSABLE)
      
                            && ((privateFlags & PFLAG_FOCUSED) != 0)) {
      
                        /* Give up focus if we are no longer focusable */
      
                        clearFocus();
      
                    } else if (((old & FOCUSABLE_MASK) == NOT_FOCUSABLE)
      
                            && ((privateFlags & PFLAG_FOCUSED) == 0)) {
      
                        /*
      
                         * Tell the view system that we are now available to take focus
      
                         * if no one else already has it.
      
                         */
      
                        if (mParent != null) mParent.focusableViewAvailable(this);
      
                    }
      
                }
      
                final int newVisibility = flags & VISIBILITY_MASK;
      
                if (newVisibility == VISIBLE) {
      
                    if ((changed & VISIBILITY_MASK) != 0) {
      
                        /*
      
                         * If this view is becoming visible, invalidate it in case it changed while
      
                         * it was not visible. Marking it drawn ensures that the invalidation will
      
                         * go through.
      
                         */
      
                        mPrivateFlags |= PFLAG_DRAWN;
      
                        invalidate(true);
      
                        needGlobalAttributesUpdate(true);
      
                        // a view becoming visible is worth notifying the parent
      
                        // about in case nothing has focus.  even if this specific view
      
                        // isn't focusable, it may contain something that is, so let
      
                        // the root view try to give this focus if nothing else does.
      
                        if ((mParent != null) && (mBottom > mTop) && (mRight > mLeft)) {
      
                            mParent.focusableViewAvailable(this);
      
                        }
      
                    }
      
                }
      
                /* Check if the GONE bit has changed */
      
                if ((changed & GONE) != 0) {
      
                    needGlobalAttributesUpdate(false);
      
                    requestLayout();
      
                    if (((mViewFlags & VISIBILITY_MASK) == GONE)) {
      
                        if (hasFocus()) clearFocus();
      
                        clearAccessibilityFocus();
      
                        destroyDrawingCache();
      
                        if (mParent instanceof View) {
      
                            // GONE views noop invalidation, so invalidate the parent
      
                            ((View) mParent).invalidate(true);
      
                        }
      
                        // Mark the view drawn to ensure that it gets invalidated properly the next
      
                        // time it is visible and gets invalidated
      
                        mPrivateFlags |= PFLAG_DRAWN;
      
                    }
      
                    if (mAttachInfo != null) {
      
                        mAttachInfo.mViewVisibilityChanged = true;
      
                    }
      
                }
      
                /* Check if the VISIBLE bit has changed */
      
                if ((changed & INVISIBLE) != 0) {
      
                    needGlobalAttributesUpdate(false);
      
                    /*
      
                     * If this view is becoming invisible, set the DRAWN flag so that
      
                     * the next invalidate() will not be skipped.
      
                     */
      
                    mPrivateFlags |= PFLAG_DRAWN;
      
                    if (((mViewFlags & VISIBILITY_MASK) == INVISIBLE)) {
      
                        // root view becoming invisible shouldn't clear focus and accessibility focus
      
                        if (getRootView() != this) {
      
                            if (hasFocus()) clearFocus();
      
                            clearAccessibilityFocus();
      
                        }
      
                    }
      
                    if (mAttachInfo != null) {
      
                        mAttachInfo.mViewVisibilityChanged = true;
      
                    }
      
                }
      
                if ((changed & VISIBILITY_MASK) != 0) {
      
                    // If the view is invisible, cleanup its display list to free up resources
      
                    if (newVisibility != VISIBLE && mAttachInfo != null) {
      
                        cleanupDraw();
      
                    }
      
                    if (mParent instanceof ViewGroup) {
      
                        ((ViewGroup) mParent).onChildVisibilityChanged(this,
      
                                (changed & VISIBILITY_MASK), newVisibility);
      
                        ((View) mParent).invalidate(true);
      
                    } else if (mParent != null) {
      
                        mParent.invalidateChild(this, null);
      
                    }
      
                    if (mAttachInfo != null) {
      
                        dispatchVisibilityChanged(this, newVisibility);
      
                        notifySubtreeAccessibilityStateChangedIfNeeded();
      
                    }
      
                }
      
                if ((changed & WILL_NOT_CACHE_DRAWING) != 0) {
      
                    destroyDrawingCache();
      
                }
      
                if ((changed & DRAWING_CACHE_ENABLED) != 0) {
      
                    destroyDrawingCache();
      
                    mPrivateFlags &= ~PFLAG_DRAWING_CACHE_VALID;
      
                    invalidateParentCaches();
      
                }
      
                if ((changed & DRAWING_CACHE_QUALITY_MASK) != 0) {
      
                    destroyDrawingCache();
      
                    mPrivateFlags &= ~PFLAG_DRAWING_CACHE_VALID;
      
                }
      
                if ((changed & DRAW_MASK) != 0) {
      
                    if ((mViewFlags & WILL_NOT_DRAW) != 0) {
      
                        if (mBackground != null
      
                                || (mForegroundInfo != null && mForegroundInfo.mDrawable != null)) {
      
                            mPrivateFlags &= ~PFLAG_SKIP_DRAW;
      
                        } else {
      
                            mPrivateFlags |= PFLAG_SKIP_DRAW;
      
                        }
      
                    } else {
      
                        mPrivateFlags &= ~PFLAG_SKIP_DRAW;
      
                    }
      
                    requestLayout();
      
                    invalidate(true);
      
                }
      
                if ((changed & KEEP_SCREEN_ON) != 0) {
      
                    if (mParent != null && mAttachInfo != null && !mAttachInfo.mRecomputeGlobalAttributes) {
      
                        mParent.recomputeViewAttributes(this);
      
                    }
      
                }
      
                if (accessibilityEnabled) {
      
                    if ((changed & FOCUSABLE_MASK) != 0 || (changed & VISIBILITY_MASK) != 0
      
                            || (changed & CLICKABLE) != 0 || (changed & LONG_CLICKABLE) != 0
      
                            || (changed & CONTEXT_CLICKABLE) != 0) {
      
                        if (oldIncludeForAccessibility != includeForAccessibility()) {
      
                            notifySubtreeAccessibilityStateChangedIfNeeded();
      
                        } else {
      
                            notifyViewAccessibilityStateChangedIfNeeded(
      
                                    AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
      
                        }
      
                    } else if ((changed & ENABLED_MASK) != 0) {
      
                        notifyViewAccessibilityStateChangedIfNeeded(
      
                                AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
      
                    }
      
                }
      
            }
      
            /**
      
             * Change the view's z order in the tree, so it's on top of other sibling
      
             * views. This ordering change may affect layout, if the parent container
      
             * uses an order-dependent layout scheme (e.g., LinearLayout). Prior
      
             * to {@link android.os.Build.VERSION_CODES#KITKAT} this
      
             * method should be followed by calls to {@link #requestLayout()} and
      
             * {@link View#invalidate()} on the view's parent to force the parent to redraw
      
             * with the new child ordering.
      
             *
      
             * @see ViewGroup#bringChildToFront(View)
      
             */
      
            public void bringToFront() {
      
                if (mParent != null) {
      
                    mParent.bringChildToFront(this);
      
                }
      
            }
      
            /**
      
             * This is called in response to an internal scroll in this view (i.e., the
      
             * view scrolled its own contents). This is typically as a result of
      
             * {@link #scrollBy(int, int)} or {@link #scrollTo(int, int)} having been
      
             * called.
      
             *
      
             * @param l Current horizontal scroll origin.
      
             * @param t Current vertical scroll origin.
      
             * @param oldl Previous horizontal scroll origin.
      
             * @param oldt Previous vertical scroll origin.
      
             */
      
            protected void onScrollChanged(int l, int t, int oldl, int oldt) {
      
                notifySubtreeAccessibilityStateChangedIfNeeded();
      
                if (AccessibilityManager.getInstance(mContext).isEnabled()) {
      
                    postSendViewScrolledAccessibilityEventCallback();
      
                }
      
                mBackgroundSizeChanged = true;
      
                if (mForegroundInfo != null) {
      
                    mForegroundInfo.mBoundsChanged = true;
      
                }
      
                final AttachInfo ai = mAttachInfo;
      
                if (ai != null) {
      
                    ai.mViewScrollChanged = true;
      
                }
      
                if (mListenerInfo != null && mListenerInfo.mOnScrollChangeListener != null) {
      
                    mListenerInfo.mOnScrollChangeListener.onScrollChange(this, l, t, oldl, oldt);
      
                }
      
            }
      
            /**
      
             * Interface definition for a callback to be invoked when the scroll
      
             * X or Y positions of a view change.
      
             * <p>
      
             * <b>Note:</b> Some views handle scrolling independently from View and may
      
             * have their own separate listeners for scroll-type events. For example,
      
             * {@link android.widget.ListView ListView} allows clients to register an
      
             * {@link android.widget.ListView#setOnScrollListener(android.widget.AbsListView.OnScrollListener) AbsListView.OnScrollListener}
      
             * to listen for changes in list scroll position.
      
             *
      
             * @see #setOnScrollChangeListener(View.OnScrollChangeListener)
      
             */
      
            public interface OnScrollChangeListener {
      
                /**
      
                 * Called when the scroll position of a view changes.
      
                 *
      
                 * @param v The view whose scroll position has changed.
      
                 * @param scrollX Current horizontal scroll origin.
      
                 * @param scrollY Current vertical scroll origin.
      
                 * @param oldScrollX Previous horizontal scroll origin.
      
                 * @param oldScrollY Previous vertical scroll origin.
      
                 */
      
                void onScrollChange(View v, int scrollX, int scrollY, int oldScrollX, int oldScrollY);
      
            }
      
            /**
      
             * Interface definition for a callback to be invoked when the layout bounds of a view
      
             * changes due to layout processing.
      
             */
      
            public interface OnLayoutChangeListener {
      
                /**
      
                 * Called when the layout bounds of a view changes due to layout processing.
      
                 *
      
                 * @param v The view whose bounds have changed.
      
                 * @param left The new value of the view's left property.
      
                 * @param top The new value of the view's top property.
      
                 * @param right The new value of the view's right property.
      
                 * @param bottom The new value of the view's bottom property.
      
                 * @param oldLeft The previous value of the view's left property.
      
                 * @param oldTop The previous value of the view's top property.
      
                 * @param oldRight The previous value of the view's right property.
      
                 * @param oldBottom The previous value of the view's bottom property.
      
                 */
      
                void onLayoutChange(View v, int left, int top, int right, int bottom,
      
                    int oldLeft, int oldTop, int oldRight, int oldBottom);
      
            }
      
            /**
      
             * This is called during layout when the size of this view has changed. If
      
             * you were just added to the view hierarchy, you're called with the old
      
             * values of 0.
      
             *
      
             * @param w Current width of this view.
      
             * @param h Current height of this view.
      
             * @param oldw Old width of this view.
      
             * @param oldh Old height of this view.
      
             */
      
            protected void onSizeChanged(int w, int h, int oldw, int oldh) {
      
            }
      
            /**
      
             * Called by draw to draw the child views. This may be overridden
      
             * by derived classes to gain control just before its children are drawn
      
             * (but after its own view has been drawn).
      
             * @param canvas the canvas on which to draw the view
      
             */
      
            protected void dispatchDraw(Canvas canvas) {
      
            }
      
            /**
      
             * Gets the parent of this view. Note that the parent is a
      
             * ViewParent and not necessarily a View.
      
             *
      
             * @return Parent of this view.
      
             */
      
            public final ViewParent getParent() {
      
                return mParent;
      
            }
      
            /**
      
             * Set the horizontal scrolled position of your view. This will cause a call to
      
             * {@link #onScrollChanged(int, int, int, int)} and the view will be
      
             * invalidated.
      
             * @param value the x position to scroll to
      
             */
      
            public void setScrollX(int value) {
      
                scrollTo(value, mScrollY);
      
            }
      
            /**
      
             * Set the vertical scrolled position of your view. This will cause a call to
      
             * {@link #onScrollChanged(int, int, int, int)} and the view will be
      
             * invalidated.
      
             * @param value the y position to scroll to
      
             */
      
            public void setScrollY(int value) {
      
                scrollTo(mScrollX, value);
      
            }
      
            /**
      
             * Return the scrolled left position of this view. This is the left edge of
      
             * the displayed part of your view. You do not need to draw any pixels
      
             * farther left, since those are outside of the frame of your view on
      
             * screen.
      
             *
      
             * @return The left edge of the displayed part of your view, in pixels.
      
             */
      
            public final int getScrollX() {
      
                return mScrollX;
      
            }
      
            /**
      
             * Return the scrolled top position of this view. This is the top edge of
      
             * the displayed part of your view. You do not need to draw any pixels above
      
             * it, since those are outside of the frame of your view on screen.
      
             *
      
             * @return The top edge of the displayed part of your view, in pixels.
      
             */
      
            public final int getScrollY() {
      
                return mScrollY;
      
            }
      
            /**
      
             * Return the width of the your view.
      
             *
      
             * @return The width of your view, in pixels.
      
             */
      
            @ViewDebug.ExportedProperty(category = "layout")
      
            public final int getWidth() {
      
                return mRight - mLeft;
      
            }
      
            /**
      
             * Return the height of your view.
      
             *
      
             * @return The height of your view, in pixels.
      
             */
      
            @ViewDebug.ExportedProperty(category = "layout")
      
            public final int getHeight() {
      
                return mBottom - mTop;
      
            }
      
            /**
      
             * Return the visible drawing bounds of your view. Fills in the output
      
             * rectangle with the values from getScrollX(), getScrollY(),
      
             * getWidth(), and getHeight(). These bounds do not account for any
      
             * transformation properties currently set on the view, such as
      
             * {@link #setScaleX(float)} or {@link #setRotation(float)}.
      
             *
      
             * @param outRect The (scrolled) drawing bounds of the view.
      
             */
      
            public void getDrawingRect(Rect outRect) {
      
                outRect.left = mScrollX;
      
                outRect.top = mScrollY;
      
                outRect.right = mScrollX + (mRight - mLeft);
      
                outRect.bottom = mScrollY + (mBottom - mTop);
      
            }
      
            /**
      
             * Like {@link #getMeasuredWidthAndState()}, but only returns the
      
             * raw width component (that is the result is masked by
      
             * {@link #MEASURED_SIZE_MASK}).
      
             *
      
             * @return The raw measured width of this view.
      
             */
      
            public final int getMeasuredWidth() {
      
                return mMeasuredWidth & MEASURED_SIZE_MASK;
      
            }
      
            /**
      
             * Return the full width measurement information for this view as computed
      
             * by the most recent call to {@link #measure(int, int)}.  This result is a bit mask
      
             * as defined by {@link #MEASURED_SIZE_MASK} and {@link #MEASURED_STATE_TOO_SMALL}.
      
             * This should be used during measurement and layout calculations only. Use
      
             * {@link #getWidth()} to see how wide a view is after layout.
      
             *
      
             * @return The measured width of this view as a bit mask.
      
             */
      
            @ViewDebug.ExportedProperty(category = "measurement", flagMapping = {
      
                    @ViewDebug.FlagToString(mask = MEASURED_STATE_MASK, equals = MEASURED_STATE_TOO_SMALL,
      
                            name = "MEASURED_STATE_TOO_SMALL"),
      
            })
      
            public final int getMeasuredWidthAndState() {
      
                return mMeasuredWidth;
      
            }
      
            /**
      
             * Like {@link #getMeasuredHeightAndState()}, but only returns the
      
             * raw width component (that is the result is masked by
      
             * {@link #MEASURED_SIZE_MASK}).
      
             *
      
             * @return The raw measured height of this view.
      
             */
      
            public final int getMeasuredHeight() {
      
                return mMeasuredHeight & MEASURED_SIZE_MASK;
      
            }
      
            /**
      
             * Return the full height measurement information for this view as computed
      
             * by the most recent call to {@link #measure(int, int)}.  This result is a bit mask
      
             * as defined by {@link #MEASURED_SIZE_MASK} and {@link #MEASURED_STATE_TOO_SMALL}.
      
             * This should be used during measurement and layout calculations only. Use
      
             * {@link #getHeight()} to see how wide a view is after layout.
      
             *
      
             * @return The measured width of this view as a bit mask.
      
             */
      
            @ViewDebug.ExportedProperty(category = "measurement", flagMapping = {
      
                    @ViewDebug.FlagToString(mask = MEASURED_STATE_MASK, equals = MEASURED_STATE_TOO_SMALL,
      
                            name = "MEASURED_STATE_TOO_SMALL"),
      
            })
      
            public final int getMeasuredHeightAndState() {
      
                return mMeasuredHeight;
      
            }
      
            /**
      
             * Return only the state bits of {@link #getMeasuredWidthAndState()}
      
             * and {@link #getMeasuredHeightAndState()}, combined into one integer.
      
             * The width component is in the regular bits {@link #MEASURED_STATE_MASK}
      
             * and the height component is at the shifted bits
      
             * {@link #MEASURED_HEIGHT_STATE_SHIFT}>>{@link #MEASURED_STATE_MASK}.
      
             */
      
            public final int getMeasuredState() {
      
                return (mMeasuredWidth&MEASURED_STATE_MASK)
      
                        | ((mMeasuredHeight>>MEASURED_HEIGHT_STATE_SHIFT)
      
                                & (MEASURED_STATE_MASK>>MEASURED_HEIGHT_STATE_SHIFT));
      
            }
      
            /**
      
             * The transform matrix of this view, which is calculated based on the current
      
             * rotation, scale, and pivot properties.
      
             *
      
             * @see #getRotation()
      
             * @see #getScaleX()
      
             * @see #getScaleY()
      
             * @see #getPivotX()
      
             * @see #getPivotY()
      
             * @return The current transform matrix for the view
      
             */
      
            public Matrix getMatrix() {
      
                ensureTransformationInfo();
      
                final Matrix matrix = mTransformationInfo.mMatrix;
      
                mRenderNode.getMatrix(matrix);
      
                return matrix;
      
            }
      
            /**
      
             * Returns true if the transform matrix is the identity matrix.
      
             * Recomputes the matrix if necessary.
      
             *
      
             * @return True if the transform matrix is the identity matrix, false otherwise.
      
             */
      
            final boolean hasIdentityMatrix() {
      
                return mRenderNode.hasIdentityMatrix();
      
            }
      
            void ensureTransformationInfo() {
      
                if (mTransformationInfo == null) {
      
                    mTransformationInfo = new TransformationInfo();
      
                }
      
            }
      
           /**
      
             * Utility method to retrieve the inverse of the current mMatrix property.
      
             * We cache the matrix to avoid recalculating it when transform properties
      
             * have not changed.
      
             *
      
             * @return The inverse of the current matrix of this view.
      
             * @hide
      
             */
      
            public final Matrix getInverseMatrix() {
      
                ensureTransformationInfo();
      
                if (mTransformationInfo.mInverseMatrix == null) {
      
                    mTransformationInfo.mInverseMatrix = new Matrix();
      
                }
      
                final Matrix matrix = mTransformationInfo.mInverseMatrix;
      
                mRenderNode.getInverseMatrix(matrix);
      
                return matrix;
      
            }
      
            /**
      
             * Gets the distance along the Z axis from the camera to this view.
      
             *
      
             * @see #setCameraDistance(float)
      
             *
      
             * @return The distance along the Z axis.
      
             */
      
            public float getCameraDistance() {
      
                final float dpi = mResources.getDisplayMetrics().densityDpi;
      
                return -(mRenderNode.getCameraDistance() * dpi);
      
            }
      
            /**
      
             * <p>Sets the distance along the Z axis (orthogonal to the X/Y plane on which
      
             * views are drawn) from the camera to this view. The camera's distance
      
             * affects 3D transformations, for instance rotations around the X and Y
      
             * axis. If the rotationX or rotationY properties are changed and this view is
      
             * large (more than half the size of the screen), it is recommended to always
      
             * use a camera distance that's greater than the height (X axis rotation) or
      
             * the width (Y axis rotation) of this view.</p>
      
             *
      
             * <p>The distance of the camera from the view plane can have an affect on the
      
             * perspective distortion of the view when it is rotated around the x or y axis.
      
             * For example, a large distance will result in a large viewing angle, and there
      
             * will not be much perspective distortion of the view as it rotates. A short
      
             * distance may cause much more perspective distortion upon rotation, and can
      
             * also result in some drawing artifacts if the rotated view ends up partially
      
             * behind the camera (which is why the recommendation is to use a distance at
      
             * least as far as the size of the view, if the view is to be rotated.)</p>
      
             *
      
             * <p>The distance is expressed in "depth pixels." The default distance depends
      
             * on the screen density. For instance, on a medium density display, the
      
             * default distance is 1280. On a high density display, the default distance
      
             * is 1920.</p>
      
             *
      
             * <p>If you want to specify a distance that leads to visually consistent
      
             * results across various densities, use the following formula:</p>
      
             * <pre>
      
             * float scale = context.getResources().getDisplayMetrics().density;
      
             * view.setCameraDistance(distance * scale);
      
             * </pre>
      
             *
      
             * <p>The density scale factor of a high density display is 1.5,
      
             * and 1920 = 1280 * 1.5.</p>
      
             *
      
             * @param distance The distance in "depth pixels", if negative the opposite
      
             *        value is used
      
             *
      
             * @see #setRotationX(float)
      
             * @see #setRotationY(float)
      
             */
      
            public void setCameraDistance(float distance) {
      
                final float dpi = mResources.getDisplayMetrics().densityDpi;
      
                invalidateViewProperty(true, false);
      
                mRenderNode.setCameraDistance(-Math.abs(distance) / dpi);
      
                invalidateViewProperty(false, false);
      
                invalidateParentIfNeededAndWasQuickRejected();
      
            }
      
            /**
      
             * The degrees that the view is rotated around the pivot point.
      
             *
      
             * @see #setRotation(float)
      
             * @see #getPivotX()
      
             * @see #getPivotY()
      
             *
      
             * @return The degrees of rotation.
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public float getRotation() {
      
                return mRenderNode.getRotation();
      
            }
      
            /**
      
             * Sets the degrees that the view is rotated around the pivot point. Increasing values
      
             * result in clockwise rotation.
      
             *
      
             * @param rotation The degrees of rotation.
      
             *
      
             * @see #getRotation()
      
             * @see #getPivotX()
      
             * @see #getPivotY()
      
             * @see #setRotationX(float)
      
             * @see #setRotationY(float)
      
             *
      
             * @attr ref android.R.styleable#View_rotation
      
             */
      
            public void setRotation(float rotation) {
      
                if (rotation != getRotation()) {
      
                    // Double-invalidation is necessary to capture view's old and new areas
      
                    invalidateViewProperty(true, false);
      
                    mRenderNode.setRotation(rotation);
      
                    invalidateViewProperty(false, true);
      
                    invalidateParentIfNeededAndWasQuickRejected();
      
                    notifySubtreeAccessibilityStateChangedIfNeeded();
      
                }
      
            }
      
            /**
      
             * The degrees that the view is rotated around the vertical axis through the pivot point.
      
             *
      
             * @see #getPivotX()
      
             * @see #getPivotY()
      
             * @see #setRotationY(float)
      
             *
      
             * @return The degrees of Y rotation.
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public float getRotationY() {
      
                return mRenderNode.getRotationY();
      
            }
      
            /**
      
             * Sets the degrees that the view is rotated around the vertical axis through the pivot point.
      
             * Increasing values result in counter-clockwise rotation from the viewpoint of looking
      
             * down the y axis.
      
             *
      
             * When rotating large views, it is recommended to adjust the camera distance
      
             * accordingly. Refer to {@link #setCameraDistance(float)} for more information.
      
             *
      
             * @param rotationY The degrees of Y rotation.
      
             *
      
             * @see #getRotationY()
      
             * @see #getPivotX()
      
             * @see #getPivotY()
      
             * @see #setRotation(float)
      
             * @see #setRotationX(float)
      
             * @see #setCameraDistance(float)
      
             *
      
             * @attr ref android.R.styleable#View_rotationY
      
             */
      
            public void setRotationY(float rotationY) {
      
                if (rotationY != getRotationY()) {
      
                    invalidateViewProperty(true, false);
      
                    mRenderNode.setRotationY(rotationY);
      
                    invalidateViewProperty(false, true);
      
                    invalidateParentIfNeededAndWasQuickRejected();
      
                    notifySubtreeAccessibilityStateChangedIfNeeded();
      
                }
      
            }
      
            /**
      
             * The degrees that the view is rotated around the horizontal axis through the pivot point.
      
             *
      
             * @see #getPivotX()
      
             * @see #getPivotY()
      
             * @see #setRotationX(float)
      
             *
      
             * @return The degrees of X rotation.
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public float getRotationX() {
      
                return mRenderNode.getRotationX();
      
            }
      
            /**
      
             * Sets the degrees that the view is rotated around the horizontal axis through the pivot point.
      
             * Increasing values result in clockwise rotation from the viewpoint of looking down the
      
             * x axis.
      
             *
      
             * When rotating large views, it is recommended to adjust the camera distance
      
             * accordingly. Refer to {@link #setCameraDistance(float)} for more information.
      
             *
      
             * @param rotationX The degrees of X rotation.
      
             *
      
             * @see #getRotationX()
      
             * @see #getPivotX()
      
             * @see #getPivotY()
      
             * @see #setRotation(float)
      
             * @see #setRotationY(float)
      
             * @see #setCameraDistance(float)
      
             *
      
             * @attr ref android.R.styleable#View_rotationX
      
             */
      
            public void setRotationX(float rotationX) {
      
                if (rotationX != getRotationX()) {
      
                    invalidateViewProperty(true, false);
      
                    mRenderNode.setRotationX(rotationX);
      
                    invalidateViewProperty(false, true);
      
                    invalidateParentIfNeededAndWasQuickRejected();
      
                    notifySubtreeAccessibilityStateChangedIfNeeded();
      
                }
      
            }
      
            /**
      
             * The amount that the view is scaled in x around the pivot point, as a proportion of
      
             * the view's unscaled width. A value of 1, the default, means that no scaling is applied.
      
             *
      
             * <p>By default, this is 1.0f.
      
             *
      
             * @see #getPivotX()
      
             * @see #getPivotY()
      
             * @return The scaling factor.
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public float getScaleX() {
      
                return mRenderNode.getScaleX();
      
            }
      
            /**
      
             * Sets the amount that the view is scaled in x around the pivot point, as a proportion of
      
             * the view's unscaled width. A value of 1 means that no scaling is applied.
      
             *
      
             * @param scaleX The scaling factor.
      
             * @see #getPivotX()
      
             * @see #getPivotY()
      
             *
      
             * @attr ref android.R.styleable#View_scaleX
      
             */
      
            public void setScaleX(float scaleX) {
      
                if (scaleX != getScaleX()) {
      
                    invalidateViewProperty(true, false);
      
                    mRenderNode.setScaleX(scaleX);
      
                    invalidateViewProperty(false, true);
      
                    invalidateParentIfNeededAndWasQuickRejected();
      
                    notifySubtreeAccessibilityStateChangedIfNeeded();
      
                }
      
            }
      
            /**
      
             * The amount that the view is scaled in y around the pivot point, as a proportion of
      
             * the view's unscaled height. A value of 1, the default, means that no scaling is applied.
      
             *
      
             * <p>By default, this is 1.0f.
      
             *
      
             * @see #getPivotX()
      
             * @see #getPivotY()
      
             * @return The scaling factor.
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public float getScaleY() {
      
                return mRenderNode.getScaleY();
      
            }
      
            /**
      
             * Sets the amount that the view is scaled in Y around the pivot point, as a proportion of
      
             * the view's unscaled width. A value of 1 means that no scaling is applied.
      
             *
      
             * @param scaleY The scaling factor.
      
             * @see #getPivotX()
      
             * @see #getPivotY()
      
             *
      
             * @attr ref android.R.styleable#View_scaleY
      
             */
      
            public void setScaleY(float scaleY) {
      
                if (scaleY != getScaleY()) {
      
                    invalidateViewProperty(true, false);
      
                    mRenderNode.setScaleY(scaleY);
      
                    invalidateViewProperty(false, true);
      
                    invalidateParentIfNeededAndWasQuickRejected();
      
                    notifySubtreeAccessibilityStateChangedIfNeeded();
      
                }
      
            }
      
            /**
      
             * The x location of the point around which the view is {@link #setRotation(float) rotated}
      
             * and {@link #setScaleX(float) scaled}.
      
             *
      
             * @see #getRotation()
      
             * @see #getScaleX()
      
             * @see #getScaleY()
      
             * @see #getPivotY()
      
             * @return The x location of the pivot point.
      
             *
      
             * @attr ref android.R.styleable#View_transformPivotX
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public float getPivotX() {
      
                return mRenderNode.getPivotX();
      
            }
      
            /**
      
             * Sets the x location of the point around which the view is
      
             * {@link #setRotation(float) rotated} and {@link #setScaleX(float) scaled}.
      
             * By default, the pivot point is centered on the object.
      
             * Setting this property disables this behavior and causes the view to use only the
      
             * explicitly set pivotX and pivotY values.
      
             *
      
             * @param pivotX The x location of the pivot point.
      
             * @see #getRotation()
      
             * @see #getScaleX()
      
             * @see #getScaleY()
      
             * @see #getPivotY()
      
             *
      
             * @attr ref android.R.styleable#View_transformPivotX
      
             */
      
            public void setPivotX(float pivotX) {
      
                if (!mRenderNode.isPivotExplicitlySet() || pivotX != getPivotX()) {
      
                    invalidateViewProperty(true, false);
      
                    mRenderNode.setPivotX(pivotX);
      
                    invalidateViewProperty(false, true);
      
                    invalidateParentIfNeededAndWasQuickRejected();
      
                }
      
            }
      
            /**
      
             * The y location of the point around which the view is {@link #setRotation(float) rotated}
      
             * and {@link #setScaleY(float) scaled}.
      
             *
      
             * @see #getRotation()
      
             * @see #getScaleX()
      
             * @see #getScaleY()
      
             * @see #getPivotY()
      
             * @return The y location of the pivot point.
      
             *
      
             * @attr ref android.R.styleable#View_transformPivotY
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public float getPivotY() {
      
                return mRenderNode.getPivotY();
      
            }
      
            /**
      
             * Sets the y location of the point around which the view is {@link #setRotation(float) rotated}
      
             * and {@link #setScaleY(float) scaled}. By default, the pivot point is centered on the object.
      
             * Setting this property disables this behavior and causes the view to use only the
      
             * explicitly set pivotX and pivotY values.
      
             *
      
             * @param pivotY The y location of the pivot point.
      
             * @see #getRotation()
      
             * @see #getScaleX()
      
             * @see #getScaleY()
      
             * @see #getPivotY()
      
             *
      
             * @attr ref android.R.styleable#View_transformPivotY
      
             */
      
            public void setPivotY(float pivotY) {
      
                if (!mRenderNode.isPivotExplicitlySet() || pivotY != getPivotY()) {
      
                    invalidateViewProperty(true, false);
      
                    mRenderNode.setPivotY(pivotY);
      
                    invalidateViewProperty(false, true);
      
                    invalidateParentIfNeededAndWasQuickRejected();
      
                }
      
            }
      
            /**
      
             * The opacity of the view. This is a value from 0 to 1, where 0 means the view is
      
             * completely transparent and 1 means the view is completely opaque.
      
             *
      
             * <p>By default this is 1.0f.
      
             * @return The opacity of the view.
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public float getAlpha() {
      
                return mTransformationInfo != null ? mTransformationInfo.mAlpha : 1;
      
            }
      
            /**
      
             * Returns whether this View has content which overlaps.
      
             *
      
             * <p>This function, intended to be overridden by specific View types, is an optimization when
      
             * alpha is set on a view. If rendering overlaps in a view with alpha < 1, that view is drawn to
      
             * an offscreen buffer and then composited into place, which can be expensive. If the view has
      
             * no overlapping rendering, the view can draw each primitive with the appropriate alpha value
      
             * directly. An example of overlapping rendering is a TextView with a background image, such as
      
             * a Button. An example of non-overlapping rendering is a TextView with no background, or an
      
             * ImageView with only the foreground image. The default implementation returns true; subclasses
      
             * should override if they have cases which can be optimized.</p>
      
             *
      
             * <p>The current implementation of the saveLayer and saveLayerAlpha methods in {@link Canvas}
      
             * necessitates that a View return true if it uses the methods internally without passing the
      
             * {@link Canvas#CLIP_TO_LAYER_SAVE_FLAG}.</p>
      
             *
      
             * @return true if the content in this view might overlap, false otherwise.
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public boolean hasOverlappingRendering() {
      
                return true;
      
            }
      
            /**
      
             * Sets the opacity of the view to a value from 0 to 1, where 0 means the view is
      
             * completely transparent and 1 means the view is completely opaque.
      
             *
      
             * <p class="note"><strong>Note:</strong> setting alpha to a translucent value (0 < alpha < 1)
      
             * can have significant performance implications, especially for large views. It is best to use
      
             * the alpha property sparingly and transiently, as in the case of fading animations.</p>
      
             *
      
             * <p>For a view with a frequently changing alpha, such as during a fading animation, it is
      
             * strongly recommended for performance reasons to either override
      
             * {@link #hasOverlappingRendering()} to return <code>false</code> if appropriate, or setting a
      
             * {@link #setLayerType(int, android.graphics.Paint) layer type} on the view for the duration
      
             * of the animation. On versions {@link android.os.Build.VERSION_CODES#M} and below,
      
             * the default path for rendering an unlayered View with alpha could add multiple milliseconds
      
             * of rendering cost, even for simple or small views. Starting with
      
             * {@link android.os.Build.VERSION_CODES#M}, {@link #LAYER_TYPE_HARDWARE} is automatically
      
             * applied to the view at the rendering level.</p>
      
             *
      
             * <p>If this view overrides {@link #onSetAlpha(int)} to return true, then this view is
      
             * responsible for applying the opacity itself.</p>
      
             *
      
             * <p>On versions {@link android.os.Build.VERSION_CODES#LOLLIPOP_MR1} and below, note that if
      
             * the view is backed by a {@link #setLayerType(int, android.graphics.Paint) layer} and is
      
             * associated with a {@link #setLayerPaint(android.graphics.Paint) layer paint}, setting an
      
             * alpha value less than 1.0 will supersede the alpha of the layer paint.</p>
      
             *
      
             * <p>Starting with {@link android.os.Build.VERSION_CODES#M}, setting a translucent alpha
      
             * value will clip a View to its bounds, unless the View returns <code>false</code> from
      
             * {@link #hasOverlappingRendering}.</p>
      
             *
      
             * @param alpha The opacity of the view.
      
             *
      
             * @see #hasOverlappingRendering()
      
             * @see #setLayerType(int, android.graphics.Paint)
      
             *
      
             * @attr ref android.R.styleable#View_alpha
      
             */
      
            public void setAlpha(@FloatRange(from=0.0, to=1.0) float alpha) {
      
                ensureTransformationInfo();
      
                if (mTransformationInfo.mAlpha != alpha) {
      
                    mTransformationInfo.mAlpha = alpha;
      
                    if (onSetAlpha((int) (alpha * 255))) {
      
                        mPrivateFlags |= PFLAG_ALPHA_SET;
      
                        // subclass is handling alpha - don't optimize rendering cache invalidation
      
                        invalidateParentCaches();
      
                        invalidate(true);
      
                    } else {
      
                        mPrivateFlags &= ~PFLAG_ALPHA_SET;
      
                        invalidateViewProperty(true, false);
      
                        mRenderNode.setAlpha(getFinalAlpha());
      
                        notifyViewAccessibilityStateChangedIfNeeded(
      
                                AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
      
                    }
      
                }
      
            }
      
            /**
      
             * Faster version of setAlpha() which performs the same steps except there are
      
             * no calls to invalidate(). The caller of this function should perform proper invalidation
      
             * on the parent and this object. The return value indicates whether the subclass handles
      
             * alpha (the return value for onSetAlpha()).
      
             *
      
             * @param alpha The new value for the alpha property
      
             * @return true if the View subclass handles alpha (the return value for onSetAlpha()) and
      
             *         the new value for the alpha property is different from the old value
      
             */
      
            boolean setAlphaNoInvalidation(float alpha) {
      
                ensureTransformationInfo();
      
                if (mTransformationInfo.mAlpha != alpha) {
      
                    mTransformationInfo.mAlpha = alpha;
      
                    boolean subclassHandlesAlpha = onSetAlpha((int) (alpha * 255));
      
                    if (subclassHandlesAlpha) {
      
                        mPrivateFlags |= PFLAG_ALPHA_SET;
      
                        return true;
      
                    } else {
      
                        mPrivateFlags &= ~PFLAG_ALPHA_SET;
      
                        mRenderNode.setAlpha(getFinalAlpha());
      
                    }
      
                }
      
                return false;
      
            }
      
            /**
      
             * This property is hidden and intended only for use by the Fade transition, which
      
             * animates it to produce a visual translucency that does not side-effect (or get
      
             * affected by) the real alpha property. This value is composited with the other
      
             * alpha value (and the AlphaAnimation value, when that is present) to produce
      
             * a final visual translucency result, which is what is passed into the DisplayList.
      
             *
      
             * @hide
      
             */
      
            public void setTransitionAlpha(float alpha) {
      
                ensureTransformationInfo();
      
                if (mTransformationInfo.mTransitionAlpha != alpha) {
      
                    mTransformationInfo.mTransitionAlpha = alpha;
      
                    mPrivateFlags &= ~PFLAG_ALPHA_SET;
      
                    invalidateViewProperty(true, false);
      
                    mRenderNode.setAlpha(getFinalAlpha());
      
                }
      
            }
      
            /**
      
             * Calculates the visual alpha of this view, which is a combination of the actual
      
             * alpha value and the transitionAlpha value (if set).
      
             */
      
            private float getFinalAlpha() {
      
                if (mTransformationInfo != null) {
      
                    return mTransformationInfo.mAlpha * mTransformationInfo.mTransitionAlpha;
      
                }
      
                return 1;
      
            }
      
            /**
      
             * This property is hidden and intended only for use by the Fade transition, which
      
             * animates it to produce a visual translucency that does not side-effect (or get
      
             * affected by) the real alpha property. This value is composited with the other
      
             * alpha value (and the AlphaAnimation value, when that is present) to produce
      
             * a final visual translucency result, which is what is passed into the DisplayList.
      
             *
      
             * @hide
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public float getTransitionAlpha() {
      
                return mTransformationInfo != null ? mTransformationInfo.mTransitionAlpha : 1;
      
            }
      
            /**
      
             * Top position of this view relative to its parent.
      
             *
      
             * @return The top of this view, in pixels.
      
             */
      
            @ViewDebug.CapturedViewProperty
      
            public final int getTop() {
      
                return mTop;
      
            }
      
            /**
      
             * Sets the top position of this view relative to its parent. This method is meant to be called
      
             * by the layout system and should not generally be called otherwise, because the property
      
             * may be changed at any time by the layout.
      
             *
      
             * @param top The top of this view, in pixels.
      
             */
      
            public final void setTop(int top) {
      
                if (top != mTop) {
      
                    final boolean matrixIsIdentity = hasIdentityMatrix();
      
                    if (matrixIsIdentity) {
      
                        if (mAttachInfo != null) {
      
                            int minTop;
      
                            int yLoc;
      
                            if (top < mTop) {
      
                                minTop = top;
      
                                yLoc = top - mTop;
      
                            } else {
      
                                minTop = mTop;
      
                                yLoc = 0;
      
                            }
      
                            invalidate(0, yLoc, mRight - mLeft, mBottom - minTop);
      
                        }
      
                    } else {
      
                        // Double-invalidation is necessary to capture view's old and new areas
      
                        invalidate(true);
      
                    }
      
                    int width = mRight - mLeft;
      
                    int oldHeight = mBottom - mTop;
      
                    mTop = top;
      
                    mRenderNode.setTop(mTop);
      
                    sizeChange(width, mBottom - mTop, width, oldHeight);
      
                    if (!matrixIsIdentity) {
      
                        mPrivateFlags |= PFLAG_DRAWN; // force another invalidation with the new orientation
      
                        invalidate(true);
      
                    }
      
                    mBackgroundSizeChanged = true;
      
                    if (mForegroundInfo != null) {
      
                        mForegroundInfo.mBoundsChanged = true;
      
                    }
      
                    invalidateParentIfNeeded();
      
                    if ((mPrivateFlags2 & PFLAG2_VIEW_QUICK_REJECTED) == PFLAG2_VIEW_QUICK_REJECTED) {
      
                        // View was rejected last time it was drawn by its parent; this may have changed
      
                        invalidateParentIfNeeded();
      
                    }
      
                }
      
            }
      
            /**
      
             * Bottom position of this view relative to its parent.
      
             *
      
             * @return The bottom of this view, in pixels.
      
             */
      
            @ViewDebug.CapturedViewProperty
      
            public final int getBottom() {
      
                return mBottom;
      
            }
      
            /**
      
             * True if this view has changed since the last time being drawn.
      
             *
      
             * @return The dirty state of this view.
      
             */
      
            public boolean isDirty() {
      
                return (mPrivateFlags & PFLAG_DIRTY_MASK) != 0;
      
            }
      
            /**
      
             * Sets the bottom position of this view relative to its parent. This method is meant to be
      
             * called by the layout system and should not generally be called otherwise, because the
      
             * property may be changed at any time by the layout.
      
             *
      
             * @param bottom The bottom of this view, in pixels.
      
             */
      
            public final void setBottom(int bottom) {
      
                if (bottom != mBottom) {
      
                    final boolean matrixIsIdentity = hasIdentityMatrix();
      
                    if (matrixIsIdentity) {
      
                        if (mAttachInfo != null) {
      
                            int maxBottom;
      
                            if (bottom < mBottom) {
      
                                maxBottom = mBottom;
      
                            } else {
      
                                maxBottom = bottom;
      
                            }
      
                            invalidate(0, 0, mRight - mLeft, maxBottom - mTop);
      
                        }
      
                    } else {
      
                        // Double-invalidation is necessary to capture view's old and new areas
      
                        invalidate(true);
      
                    }
      
                    int width = mRight - mLeft;
      
                    int oldHeight = mBottom - mTop;
      
                    mBottom = bottom;
      
                    mRenderNode.setBottom(mBottom);
      
                    sizeChange(width, mBottom - mTop, width, oldHeight);
      
                    if (!matrixIsIdentity) {
      
                        mPrivateFlags |= PFLAG_DRAWN; // force another invalidation with the new orientation
      
                        invalidate(true);
      
                    }
      
                    mBackgroundSizeChanged = true;
      
                    if (mForegroundInfo != null) {
      
                        mForegroundInfo.mBoundsChanged = true;
      
                    }
      
                    invalidateParentIfNeeded();
      
                    if ((mPrivateFlags2 & PFLAG2_VIEW_QUICK_REJECTED) == PFLAG2_VIEW_QUICK_REJECTED) {
      
                        // View was rejected last time it was drawn by its parent; this may have changed
      
                        invalidateParentIfNeeded();
      
                    }
      
                }
      
            }
      
            /**
      
             * Left position of this view relative to its parent.
      
             *
      
             * @return The left edge of this view, in pixels.
      
             */
      
            @ViewDebug.CapturedViewProperty
      
            public final int getLeft() {
      
                return mLeft;
      
            }
      
            /**
      
             * Sets the left position of this view relative to its parent. This method is meant to be called
      
             * by the layout system and should not generally be called otherwise, because the property
      
             * may be changed at any time by the layout.
      
             *
      
             * @param left The left of this view, in pixels.
      
             */
      
            public final void setLeft(int left) {
      
                if (left != mLeft) {
      
                    final boolean matrixIsIdentity = hasIdentityMatrix();
      
                    if (matrixIsIdentity) {
      
                        if (mAttachInfo != null) {
      
                            int minLeft;
      
                            int xLoc;
      
                            if (left < mLeft) {
      
                                minLeft = left;
      
                                xLoc = left - mLeft;
      
                            } else {
      
                                minLeft = mLeft;
      
                                xLoc = 0;
      
                            }
      
                            invalidate(xLoc, 0, mRight - minLeft, mBottom - mTop);
      
                        }
      
                    } else {
      
                        // Double-invalidation is necessary to capture view's old and new areas
      
                        invalidate(true);
      
                    }
      
                    int oldWidth = mRight - mLeft;
      
                    int height = mBottom - mTop;
      
                    mLeft = left;
      
                    mRenderNode.setLeft(left);
      
                    sizeChange(mRight - mLeft, height, oldWidth, height);
      
                    if (!matrixIsIdentity) {
      
                        mPrivateFlags |= PFLAG_DRAWN; // force another invalidation with the new orientation
      
                        invalidate(true);
      
                    }
      
                    mBackgroundSizeChanged = true;
      
                    if (mForegroundInfo != null) {
      
                        mForegroundInfo.mBoundsChanged = true;
      
                    }
      
                    invalidateParentIfNeeded();
      
                    if ((mPrivateFlags2 & PFLAG2_VIEW_QUICK_REJECTED) == PFLAG2_VIEW_QUICK_REJECTED) {
      
                        // View was rejected last time it was drawn by its parent; this may have changed
      
                        invalidateParentIfNeeded();
      
                    }
      
                }
      
            }
      
            /**
      
             * Right position of this view relative to its parent.
      
             *
      
             * @return The right edge of this view, in pixels.
      
             */
      
            @ViewDebug.CapturedViewProperty
      
            public final int getRight() {
      
                return mRight;
      
            }
      
            /**
      
             * Sets the right position of this view relative to its parent. This method is meant to be called
      
             * by the layout system and should not generally be called otherwise, because the property
      
             * may be changed at any time by the layout.
      
             *
      
             * @param right The right of this view, in pixels.
      
             */
      
            public final void setRight(int right) {
      
                if (right != mRight) {
      
                    final boolean matrixIsIdentity = hasIdentityMatrix();
      
                    if (matrixIsIdentity) {
      
                        if (mAttachInfo != null) {
      
                            int maxRight;
      
                            if (right < mRight) {
      
                                maxRight = mRight;
      
                            } else {
      
                                maxRight = right;
      
                            }
      
                            invalidate(0, 0, maxRight - mLeft, mBottom - mTop);
      
                        }
      
                    } else {
      
                        // Double-invalidation is necessary to capture view's old and new areas
      
                        invalidate(true);
      
                    }
      
                    int oldWidth = mRight - mLeft;
      
                    int height = mBottom - mTop;
      
                    mRight = right;
      
                    mRenderNode.setRight(mRight);
      
                    sizeChange(mRight - mLeft, height, oldWidth, height);
      
                    if (!matrixIsIdentity) {
      
                        mPrivateFlags |= PFLAG_DRAWN; // force another invalidation with the new orientation
      
                        invalidate(true);
      
                    }
      
                    mBackgroundSizeChanged = true;
      
                    if (mForegroundInfo != null) {
      
                        mForegroundInfo.mBoundsChanged = true;
      
                    }
      
                    invalidateParentIfNeeded();
      
                    if ((mPrivateFlags2 & PFLAG2_VIEW_QUICK_REJECTED) == PFLAG2_VIEW_QUICK_REJECTED) {
      
                        // View was rejected last time it was drawn by its parent; this may have changed
      
                        invalidateParentIfNeeded();
      
                    }
      
                }
      
            }
      
            /**
      
             * The visual x position of this view, in pixels. This is equivalent to the
      
             * {@link #setTranslationX(float) translationX} property plus the current
      
             * {@link #getLeft() left} property.
      
             *
      
             * @return The visual x position of this view, in pixels.
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public float getX() {
      
                return mLeft + getTranslationX();
      
            }
      
            /**
      
             * Sets the visual x position of this view, in pixels. This is equivalent to setting the
      
             * {@link #setTranslationX(float) translationX} property to be the difference between
      
             * the x value passed in and the current {@link #getLeft() left} property.
      
             *
      
             * @param x The visual x position of this view, in pixels.
      
             */
      
            public void setX(float x) {
      
                setTranslationX(x - mLeft);
      
            }
      
            /**
      
             * The visual y position of this view, in pixels. This is equivalent to the
      
             * {@link #setTranslationY(float) translationY} property plus the current
      
             * {@link #getTop() top} property.
      
             *
      
             * @return The visual y position of this view, in pixels.
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public float getY() {
      
                return mTop + getTranslationY();
      
            }
      
            /**
      
             * Sets the visual y position of this view, in pixels. This is equivalent to setting the
      
             * {@link #setTranslationY(float) translationY} property to be the difference between
      
             * the y value passed in and the current {@link #getTop() top} property.
      
             *
      
             * @param y The visual y position of this view, in pixels.
      
             */
      
            public void setY(float y) {
      
                setTranslationY(y - mTop);
      
            }
      
            /**
      
             * The visual z position of this view, in pixels. This is equivalent to the
      
             * {@link #setTranslationZ(float) translationZ} property plus the current
      
             * {@link #getElevation() elevation} property.
      
             *
      
             * @return The visual z position of this view, in pixels.
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public float getZ() {
      
                return getElevation() + getTranslationZ();
      
            }
      
            /**
      
             * Sets the visual z position of this view, in pixels. This is equivalent to setting the
      
             * {@link #setTranslationZ(float) translationZ} property to be the difference between
      
             * the x value passed in and the current {@link #getElevation() elevation} property.
      
             *
      
             * @param z The visual z position of this view, in pixels.
      
             */
      
            public void setZ(float z) {
      
                setTranslationZ(z - getElevation());
      
            }
      
            /**
      
             * The base elevation of this view relative to its parent, in pixels.
      
             *
      
             * @return The base depth position of the view, in pixels.
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public float getElevation() {
      
                return mRenderNode.getElevation();
      
            }
      
            /**
      
             * Sets the base elevation of this view, in pixels.
      
             *
      
             * @attr ref android.R.styleable#View_elevation
      
             */
      
            public void setElevation(float elevation) {
      
                if (elevation != getElevation()) {
      
                    invalidateViewProperty(true, false);
      
                    mRenderNode.setElevation(elevation);
      
                    invalidateViewProperty(false, true);
      
                    invalidateParentIfNeededAndWasQuickRejected();
      
                }
      
            }
      
            /**
      
             * The horizontal location of this view relative to its {@link #getLeft() left} position.
      
             * This position is post-layout, in addition to wherever the object's
      
             * layout placed it.
      
             *
      
             * @return The horizontal position of this view relative to its left position, in pixels.
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public float getTranslationX() {
      
                return mRenderNode.getTranslationX();
      
            }
      
            /**
      
             * Sets the horizontal location of this view relative to its {@link #getLeft() left} position.
      
             * This effectively positions the object post-layout, in addition to wherever the object's
      
             * layout placed it.
      
             *
      
             * @param translationX The horizontal position of this view relative to its left position,
      
             * in pixels.
      
             *
      
             * @attr ref android.R.styleable#View_translationX
      
             */
      
            public void setTranslationX(float translationX) {
      
                if (translationX != getTranslationX()) {
      
                    invalidateViewProperty(true, false);
      
                    mRenderNode.setTranslationX(translationX);
      
                    invalidateViewProperty(false, true);
      
                    invalidateParentIfNeededAndWasQuickRejected();
      
                    notifySubtreeAccessibilityStateChangedIfNeeded();
      
                }
      
            }
      
            /**
      
             * The vertical location of this view relative to its {@link #getTop() top} position.
      
             * This position is post-layout, in addition to wherever the object's
      
             * layout placed it.
      
             *
      
             * @return The vertical position of this view relative to its top position,
      
             * in pixels.
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public float getTranslationY() {
      
                return mRenderNode.getTranslationY();
      
            }
      
            /**
      
             * Sets the vertical location of this view relative to its {@link #getTop() top} position.
      
             * This effectively positions the object post-layout, in addition to wherever the object's
      
             * layout placed it.
      
             *
      
             * @param translationY The vertical position of this view relative to its top position,
      
             * in pixels.
      
             *
      
             * @attr ref android.R.styleable#View_translationY
      
             */
      
            public void setTranslationY(float translationY) {
      
                if (translationY != getTranslationY()) {
      
                    invalidateViewProperty(true, false);
      
                    mRenderNode.setTranslationY(translationY);
      
                    invalidateViewProperty(false, true);
      
                    invalidateParentIfNeededAndWasQuickRejected();
      
                    notifySubtreeAccessibilityStateChangedIfNeeded();
      
                }
      
            }
      
            /**
      
             * The depth location of this view relative to its {@link #getElevation() elevation}.
      
             *
      
             * @return The depth of this view relative to its elevation.
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public float getTranslationZ() {
      
                return mRenderNode.getTranslationZ();
      
            }
      
            /**
      
             * Sets the depth location of this view relative to its {@link #getElevation() elevation}.
      
             *
      
             * @attr ref android.R.styleable#View_translationZ
      
             */
      
            public void setTranslationZ(float translationZ) {
      
                if (translationZ != getTranslationZ()) {
      
                    invalidateViewProperty(true, false);
      
                    mRenderNode.setTranslationZ(translationZ);
      
                    invalidateViewProperty(false, true);
      
                    invalidateParentIfNeededAndWasQuickRejected();
      
                }
      
            }
      
            /** @hide */
      
            public void setAnimationMatrix(Matrix matrix) {
      
                invalidateViewProperty(true, false);
      
                mRenderNode.setAnimationMatrix(matrix);
      
                invalidateViewProperty(false, true);
      
                invalidateParentIfNeededAndWasQuickRejected();
      
            }
      
            /**
      
             * Returns the current StateListAnimator if exists.
      
             *
      
             * @return StateListAnimator or null if it does not exists
      
             * @see    #setStateListAnimator(android.animation.StateListAnimator)
      
             */
      
            public StateListAnimator getStateListAnimator() {
      
                return mStateListAnimator;
      
            }
      
            /**
      
             * Attaches the provided StateListAnimator to this View.
      
             * <p>
      
             * Any previously attached StateListAnimator will be detached.
      
             *
      
             * @param stateListAnimator The StateListAnimator to update the view
      
             * @see {@link android.animation.StateListAnimator}
      
             */
      
            public void setStateListAnimator(StateListAnimator stateListAnimator) {
      
                if (mStateListAnimator == stateListAnimator) {
      
                    return;
      
                }
      
                if (mStateListAnimator != null) {
      
                    mStateListAnimator.setTarget(null);
      
                }
      
                mStateListAnimator = stateListAnimator;
      
                if (stateListAnimator != null) {
      
                    stateListAnimator.setTarget(this);
      
                    if (isAttachedToWindow()) {
      
                        stateListAnimator.setState(getDrawableState());
      
                    }
      
                }
      
            }
      
            /**
      
             * Returns whether the Outline should be used to clip the contents of the View.
      
             * <p>
      
             * Note that this flag will only be respected if the View's Outline returns true from
      
             * {@link Outline#canClip()}.
      
             *
      
             * @see #setOutlineProvider(ViewOutlineProvider)
      
             * @see #setClipToOutline(boolean)
      
             */
      
            public final boolean getClipToOutline() {
      
                return mRenderNode.getClipToOutline();
      
            }
      
            /**
      
             * Sets whether the View's Outline should be used to clip the contents of the View.
      
             * <p>
      
             * Only a single non-rectangular clip can be applied on a View at any time.
      
             * Circular clips from a {@link ViewAnimationUtils#createCircularReveal(View, int, int, float, float)
      
             * circular reveal} animation take priority over Outline clipping, and
      
             * child Outline clipping takes priority over Outline clipping done by a
      
             * parent.
      
             * <p>
      
             * Note that this flag will only be respected if the View's Outline returns true from
      
             * {@link Outline#canClip()}.
      
             *
      
             * @see #setOutlineProvider(ViewOutlineProvider)
      
             * @see #getClipToOutline()
      
             */
      
            public void setClipToOutline(boolean clipToOutline) {
      
                damageInParent();
      
                if (getClipToOutline() != clipToOutline) {
      
                    mRenderNode.setClipToOutline(clipToOutline);
      
                }
      
            }
      
            // correspond to the enum values of View_outlineProvider
      
            private static final int PROVIDER_BACKGROUND = 0;
      
            private static final int PROVIDER_NONE = 1;
      
            private static final int PROVIDER_BOUNDS = 2;
      
            private static final int PROVIDER_PADDED_BOUNDS = 3;
      
            private void setOutlineProviderFromAttribute(int providerInt) {
      
                switch (providerInt) {
      
                    case PROVIDER_BACKGROUND:
      
                        setOutlineProvider(ViewOutlineProvider.BACKGROUND);
      
                        break;
      
                    case PROVIDER_NONE:
      
                        setOutlineProvider(null);
      
                        break;
      
                    case PROVIDER_BOUNDS:
      
                        setOutlineProvider(ViewOutlineProvider.BOUNDS);
      
                        break;
      
                    case PROVIDER_PADDED_BOUNDS:
      
                        setOutlineProvider(ViewOutlineProvider.PADDED_BOUNDS);
      
                        break;
      
                }
      
            }
      
            /**
      
             * Sets the {@link ViewOutlineProvider} of the view, which generates the Outline that defines
      
             * the shape of the shadow it casts, and enables outline clipping.
      
             * <p>
      
             * The default ViewOutlineProvider, {@link ViewOutlineProvider#BACKGROUND}, queries the Outline
      
             * from the View's background drawable, via {@link Drawable#getOutline(Outline)}. Changing the
      
             * outline provider with this method allows this behavior to be overridden.
      
             * <p>
      
             * If the ViewOutlineProvider is null, if querying it for an outline returns false,
      
             * or if the produced Outline is {@link Outline#isEmpty()}, shadows will not be cast.
      
             * <p>
      
             * Only outlines that return true from {@link Outline#canClip()} may be used for clipping.
      
             *
      
             * @see #setClipToOutline(boolean)
      
             * @see #getClipToOutline()
      
             * @see #getOutlineProvider()
      
             */
      
            public void setOutlineProvider(ViewOutlineProvider provider) {
      
                mOutlineProvider = provider;
      
                invalidateOutline();
      
            }
      
            /**
      
             * Returns the current {@link ViewOutlineProvider} of the view, which generates the Outline
      
             * that defines the shape of the shadow it casts, and enables outline clipping.
      
             *
      
             * @see #setOutlineProvider(ViewOutlineProvider)
      
             */
      
            public ViewOutlineProvider getOutlineProvider() {
      
                return mOutlineProvider;
      
            }
      
            /**
      
             * Called to rebuild this View's Outline from its {@link ViewOutlineProvider outline provider}
      
             *
      
             * @see #setOutlineProvider(ViewOutlineProvider)
      
             */
      
            public void invalidateOutline() {
      
                rebuildOutline();
      
                notifySubtreeAccessibilityStateChangedIfNeeded();
      
                invalidateViewProperty(false, false);
      
            }
      
            /**
      
             * Internal version of {@link #invalidateOutline()} which invalidates the
      
             * outline without invalidating the view itself. This is intended to be called from
      
             * within methods in the View class itself which are the result of the view being
      
             * invalidated already. For example, when we are drawing the background of a View,
      
             * we invalidate the outline in case it changed in the meantime, but we do not
      
             * need to invalidate the view because we're already drawing the background as part
      
             * of drawing the view in response to an earlier invalidation of the view.
      
             */
      
            private void rebuildOutline() {
      
                // Unattached views ignore this signal, and outline is recomputed in onAttachedToWindow()
      
                if (mAttachInfo == null) return;
      
                if (mOutlineProvider == null) {
      
                    // no provider, remove outline
      
                    mRenderNode.setOutline(null);
      
                } else {
      
                    final Outline outline = mAttachInfo.mTmpOutline;
      
                    outline.setEmpty();
      
                    outline.setAlpha(1.0f);
      
                    mOutlineProvider.getOutline(this, outline);
      
                    mRenderNode.setOutline(outline);
      
                }
      
            }
      
            /**
      
             * HierarchyViewer only
      
             *
      
             * @hide
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public boolean hasShadow() {
      
                return mRenderNode.hasShadow();
      
            }
      
            /** @hide */
      
            public void setRevealClip(boolean shouldClip, float x, float y, float radius) {
      
                mRenderNode.setRevealClip(shouldClip, x, y, radius);
      
                invalidateViewProperty(false, false);
      
            }
      
            /**
      
             * Hit rectangle in parent's coordinates
      
             *
      
             * @param outRect The hit rectangle of the view.
      
             */
      
            public void getHitRect(Rect outRect) {
      
                if (hasIdentityMatrix() || mAttachInfo == null) {
      
                    outRect.set(mLeft, mTop, mRight, mBottom);
      
                } else {
      
                    final RectF tmpRect = mAttachInfo.mTmpTransformRect;
      
                    tmpRect.set(0, 0, getWidth(), getHeight());
      
                    getMatrix().mapRect(tmpRect); // TODO: mRenderNode.mapRect(tmpRect)
      
                    outRect.set((int) tmpRect.left + mLeft, (int) tmpRect.top + mTop,
      
                            (int) tmpRect.right + mLeft, (int) tmpRect.bottom + mTop);
      
                }
      
            }
      
            /**
      
             * Determines whether the given point, in local coordinates is inside the view.
      
             */
      
            /*package*/ final boolean pointInView(float localX, float localY) {
      
                return localX >= 0 && localX < (mRight - mLeft)
      
                        && localY >= 0 && localY < (mBottom - mTop);
      
            }
      
            /**
      
             * Utility method to determine whether the given point, in local coordinates,
      
             * is inside the view, where the area of the view is expanded by the slop factor.
      
             * This method is called while processing touch-move events to determine if the event
      
             * is still within the view.
      
             *
      
             * @hide
      
             */
      
            public boolean pointInView(float localX, float localY, float slop) {
      
                return localX >= -slop && localY >= -slop && localX < ((mRight - mLeft) + slop) &&
      
                        localY < ((mBottom - mTop) + slop);
      
            }
      
            /**
      
             * When a view has focus and the user navigates away from it, the next view is searched for
      
             * starting from the rectangle filled in by this method.
      
             *
      
             * By default, the rectangle is the {@link #getDrawingRect(android.graphics.Rect)})
      
             * of the view.  However, if your view maintains some idea of internal selection,
      
             * such as a cursor, or a selected row or column, you should override this method and
      
             * fill in a more specific rectangle.
      
             *
      
             * @param r The rectangle to fill in, in this view's coordinates.
      
             */
      
            public void getFocusedRect(Rect r) {
      
                getDrawingRect(r);
      
            }
      
            /**
      
             * If some part of this view is not clipped by any of its parents, then
      
             * return that area in r in global (root) coordinates. To convert r to local
      
             * coordinates (without taking possible View rotations into account), offset
      
             * it by -globalOffset (e.g. r.offset(-globalOffset.x, -globalOffset.y)).
      
             * If the view is completely clipped or translated out, return false.
      
             *
      
             * @param r If true is returned, r holds the global coordinates of the
      
             *        visible portion of this view.
      
             * @param globalOffset If true is returned, globalOffset holds the dx,dy
      
             *        between this view and its root. globalOffet may be null.
      
             * @return true if r is non-empty (i.e. part of the view is visible at the
      
             *         root level.
      
             */
      
            public boolean getGlobalVisibleRect(Rect r, Point globalOffset) {
      
                int width = mRight - mLeft;
      
                int height = mBottom - mTop;
      
                if (width > 0 && height > 0) {
      
                    r.set(0, 0, width, height);
      
                    if (globalOffset != null) {
      
                        globalOffset.set(-mScrollX, -mScrollY);
      
                    }
      
                    return mParent == null || mParent.getChildVisibleRect(this, r, globalOffset);
      
                }
      
                return false;
      
            }
      
            public final boolean getGlobalVisibleRect(Rect r) {
      
                return getGlobalVisibleRect(r, null);
      
            }
      
            public final boolean getLocalVisibleRect(Rect r) {
      
                final Point offset = mAttachInfo != null ? mAttachInfo.mPoint : new Point();
      
                if (getGlobalVisibleRect(r, offset)) {
      
                    r.offset(-offset.x, -offset.y); // make r local
      
                    return true;
      
                }
      
                return false;
      
            }
      
            /**
      
             * Offset this view's vertical location by the specified number of pixels.
      
             *
      
             * @param offset the number of pixels to offset the view by
      
             */
      
            public void offsetTopAndBottom(int offset) {
      
                if (offset != 0) {
      
                    final boolean matrixIsIdentity = hasIdentityMatrix();
      
                    if (matrixIsIdentity) {
      
                        if (isHardwareAccelerated()) {
      
                            invalidateViewProperty(false, false);
      
                        } else {
      
                            final ViewParent p = mParent;
      
                            if (p != null && mAttachInfo != null) {
      
                                final Rect r = mAttachInfo.mTmpInvalRect;
      
                                int minTop;
      
                                int maxBottom;
      
                                int yLoc;
      
                                if (offset < 0) {
      
                                    minTop = mTop + offset;
      
                                    maxBottom = mBottom;
      
                                    yLoc = offset;
      
                                } else {
      
                                    minTop = mTop;
      
                                    maxBottom = mBottom + offset;
      
                                    yLoc = 0;
      
                                }
      
                                r.set(0, yLoc, mRight - mLeft, maxBottom - minTop);
      
                                p.invalidateChild(this, r);
      
                            }
      
                        }
      
                    } else {
      
                        invalidateViewProperty(false, false);
      
                    }
      
                    mTop += offset;
      
                    mBottom += offset;
      
                    mRenderNode.offsetTopAndBottom(offset);
      
                    if (isHardwareAccelerated()) {
      
                        invalidateViewProperty(false, false);
      
                        invalidateParentIfNeededAndWasQuickRejected();
      
                    } else {
      
                        if (!matrixIsIdentity) {
      
                            invalidateViewProperty(false, true);
      
                        }
      
                        invalidateParentIfNeeded();
      
                    }
      
                    notifySubtreeAccessibilityStateChangedIfNeeded();
      
                }
      
            }
      
            /**
      
             * Offset this view's horizontal location by the specified amount of pixels.
      
             *
      
             * @param offset the number of pixels to offset the view by
      
             */
      
            public void offsetLeftAndRight(int offset) {
      
                if (offset != 0) {
      
                    final boolean matrixIsIdentity = hasIdentityMatrix();
      
                    if (matrixIsIdentity) {
      
                        if (isHardwareAccelerated()) {
      
                            invalidateViewProperty(false, false);
      
                        } else {
      
                            final ViewParent p = mParent;
      
                            if (p != null && mAttachInfo != null) {
      
                                final Rect r = mAttachInfo.mTmpInvalRect;
      
                                int minLeft;
      
                                int maxRight;
      
                                if (offset < 0) {
      
                                    minLeft = mLeft + offset;
      
                                    maxRight = mRight;
      
                                } else {
      
                                    minLeft = mLeft;
      
                                    maxRight = mRight + offset;
      
                                }
      
                                r.set(0, 0, maxRight - minLeft, mBottom - mTop);
      
                                p.invalidateChild(this, r);
      
                            }
      
                        }
      
                    } else {
      
                        invalidateViewProperty(false, false);
      
                    }
      
                    mLeft += offset;
      
                    mRight += offset;
      
                    mRenderNode.offsetLeftAndRight(offset);
      
                    if (isHardwareAccelerated()) {
      
                        invalidateViewProperty(false, false);
      
                        invalidateParentIfNeededAndWasQuickRejected();
      
                    } else {
      
                        if (!matrixIsIdentity) {
      
                            invalidateViewProperty(false, true);
      
                        }
      
                        invalidateParentIfNeeded();
      
                    }
      
                    notifySubtreeAccessibilityStateChangedIfNeeded();
      
                }
      
            }
      
            /**
      
             * Get the LayoutParams associated with this view. All views should have
      
             * layout parameters. These supply parameters to the <i>parent</i> of this
      
             * view specifying how it should be arranged. There are many subclasses of
      
             * ViewGroup.LayoutParams, and these correspond to the different subclasses
      
             * of ViewGroup that are responsible for arranging their children.
      
             *
      
             * This method may return null if this View is not attached to a parent
      
             * ViewGroup or {@link #setLayoutParams(android.view.ViewGroup.LayoutParams)}
      
             * was not invoked successfully. When a View is attached to a parent
      
             * ViewGroup, this method must not return null.
      
             *
      
             * @return The LayoutParams associated with this view, or null if no
      
             *         parameters have been set yet
      
             */
      
            @ViewDebug.ExportedProperty(deepExport = true, prefix = "layout_")
      
            public ViewGroup.LayoutParams getLayoutParams() {
      
                return mLayoutParams;
      
            }
      
            /**
      
             * Set the layout parameters associated with this view. These supply
      
             * parameters to the <i>parent</i> of this view specifying how it should be
      
             * arranged. There are many subclasses of ViewGroup.LayoutParams, and these
      
             * correspond to the different subclasses of ViewGroup that are responsible
      
             * for arranging their children.
      
             *
      
             * @param params The layout parameters for this view, cannot be null
      
             */
      
            public void setLayoutParams(ViewGroup.LayoutParams params) {
      
                if (params == null) {
      
                    throw new NullPointerException("Layout parameters cannot be null");
      
                }
      
                mLayoutParams = params;
      
                resolveLayoutParams();
      
                if (mParent instanceof ViewGroup) {
      
                    ((ViewGroup) mParent).onSetLayoutParams(this, params);
      
                }
      
                requestLayout();
      
            }
      
            /**
      
             * Resolve the layout parameters depending on the resolved layout direction
      
             *
      
             * @hide
      
             */
      
            public void resolveLayoutParams() {
      
                if (mLayoutParams != null) {
      
                    mLayoutParams.resolveLayoutDirection(getLayoutDirection());
      
                }
      
            }
      
            /**
      
             * Set the scrolled position of your view. This will cause a call to
      
             * {@link #onScrollChanged(int, int, int, int)} and the view will be
      
             * invalidated.
      
             * @param x the x position to scroll to
      
             * @param y the y position to scroll to
      
             */
      
            public void scrollTo(int x, int y) {
      
                if (mScrollX != x || mScrollY != y) {
      
                    int oldX = mScrollX;
      
                    int oldY = mScrollY;
      
                    mScrollX = x;
      
                    mScrollY = y;
      
                    invalidateParentCaches();
      
                    onScrollChanged(mScrollX, mScrollY, oldX, oldY);
      
                    if (!awakenScrollBars()) {
      
                        postInvalidateOnAnimation();
      
                    }
      
                }
      
            }
      
            /**
      
             * Move the scrolled position of your view. This will cause a call to
      
             * {@link #onScrollChanged(int, int, int, int)} and the view will be
      
             * invalidated.
      
             * @param x the amount of pixels to scroll by horizontally
      
             * @param y the amount of pixels to scroll by vertically
      
             */
      
            public void scrollBy(int x, int y) {
      
                scrollTo(mScrollX + x, mScrollY + y);
      
            }
      
            /**
      
             * <p>Trigger the scrollbars to draw. When invoked this method starts an
      
             * animation to fade the scrollbars out after a default delay. If a subclass
      
             * provides animated scrolling, the start delay should equal the duration
      
             * of the scrolling animation.</p>
      
             *
      
             * <p>The animation starts only if at least one of the scrollbars is
      
             * enabled, as specified by {@link #isHorizontalScrollBarEnabled()} and
      
             * {@link #isVerticalScrollBarEnabled()}. When the animation is started,
      
             * this method returns true, and false otherwise. If the animation is
      
             * started, this method calls {@link #invalidate()}; in that case the
      
             * caller should not call {@link #invalidate()}.</p>
      
             *
      
             * <p>This method should be invoked every time a subclass directly updates
      
             * the scroll parameters.</p>
      
             *
      
             * <p>This method is automatically invoked by {@link #scrollBy(int, int)}
      
             * and {@link #scrollTo(int, int)}.</p>
      
             *
      
             * @return true if the animation is played, false otherwise
      
             *
      
             * @see #awakenScrollBars(int)
      
             * @see #scrollBy(int, int)
      
             * @see #scrollTo(int, int)
      
             * @see #isHorizontalScrollBarEnabled()
      
             * @see #isVerticalScrollBarEnabled()
      
             * @see #setHorizontalScrollBarEnabled(boolean)
      
             * @see #setVerticalScrollBarEnabled(boolean)
      
             */
      
            protected boolean awakenScrollBars() {
      
                return mScrollCache != null &&
      
                        awakenScrollBars(mScrollCache.scrollBarDefaultDelayBeforeFade, true);
      
            }
      
            /**
      
             * Trigger the scrollbars to draw.
      
             * This method differs from awakenScrollBars() only in its default duration.
      
             * initialAwakenScrollBars() will show the scroll bars for longer than
      
             * usual to give the user more of a chance to notice them.
      
             *
      
             * @return true if the animation is played, false otherwise.
      
             */
      
            private boolean initialAwakenScrollBars() {
      
                return mScrollCache != null &&
      
                        awakenScrollBars(mScrollCache.scrollBarDefaultDelayBeforeFade * 4, true);
      
            }
      
            /**
      
             * <p>
      
             * Trigger the scrollbars to draw. When invoked this method starts an
      
             * animation to fade the scrollbars out after a fixed delay. If a subclass
      
             * provides animated scrolling, the start delay should equal the duration of
      
             * the scrolling animation.
      
             * </p>
      
             *
      
             * <p>
      
             * The animation starts only if at least one of the scrollbars is enabled,
      
             * as specified by {@link #isHorizontalScrollBarEnabled()} and
      
             * {@link #isVerticalScrollBarEnabled()}. When the animation is started,
      
             * this method returns true, and false otherwise. If the animation is
      
             * started, this method calls {@link #invalidate()}; in that case the caller
      
             * should not call {@link #invalidate()}.
      
             * </p>
      
             *
      
             * <p>
      
             * This method should be invoked every time a subclass directly updates the
      
             * scroll parameters.
      
             * </p>
      
             *
      
             * @param startDelay the delay, in milliseconds, after which the animation
      
             *        should start; when the delay is 0, the animation starts
      
             *        immediately
      
             * @return true if the animation is played, false otherwise
      
             *
      
             * @see #scrollBy(int, int)
      
             * @see #scrollTo(int, int)
      
             * @see #isHorizontalScrollBarEnabled()
      
             * @see #isVerticalScrollBarEnabled()
      
             * @see #setHorizontalScrollBarEnabled(boolean)
      
             * @see #setVerticalScrollBarEnabled(boolean)
      
             */
      
            protected boolean awakenScrollBars(int startDelay) {
      
                return awakenScrollBars(startDelay, true);
      
            }
      
            /**
      
             * <p>
      
             * Trigger the scrollbars to draw. When invoked this method starts an
      
             * animation to fade the scrollbars out after a fixed delay. If a subclass
      
             * provides animated scrolling, the start delay should equal the duration of
      
             * the scrolling animation.
      
             * </p>
      
             *
      
             * <p>
      
             * The animation starts only if at least one of the scrollbars is enabled,
      
             * as specified by {@link #isHorizontalScrollBarEnabled()} and
      
             * {@link #isVerticalScrollBarEnabled()}. When the animation is started,
      
             * this method returns true, and false otherwise. If the animation is
      
             * started, this method calls {@link #invalidate()} if the invalidate parameter
      
             * is set to true; in that case the caller
      
             * should not call {@link #invalidate()}.
      
             * </p>
      
             *
      
             * <p>
      
             * This method should be invoked every time a subclass directly updates the
      
             * scroll parameters.
      
             * </p>
      
             *
      
             * @param startDelay the delay, in milliseconds, after which the animation
      
             *        should start; when the delay is 0, the animation starts
      
             *        immediately
      
             *
      
             * @param invalidate Whether this method should call invalidate
      
             *
      
             * @return true if the animation is played, false otherwise
      
             *
      
             * @see #scrollBy(int, int)
      
             * @see #scrollTo(int, int)
      
             * @see #isHorizontalScrollBarEnabled()
      
             * @see #isVerticalScrollBarEnabled()
      
             * @see #setHorizontalScrollBarEnabled(boolean)
      
             * @see #setVerticalScrollBarEnabled(boolean)
      
             */
      
            protected boolean awakenScrollBars(int startDelay, boolean invalidate) {
      
                final ScrollabilityCache scrollCache = mScrollCache;
      
                if (scrollCache == null || !scrollCache.fadeScrollBars) {
      
                    return false;
      
                }
      
                if (scrollCache.scrollBar == null) {
      
                    scrollCache.scrollBar = new ScrollBarDrawable();
      
                    scrollCache.scrollBar.setCallback(this);
      
                    scrollCache.scrollBar.setState(getDrawableState());
      
                }
      
                if (isHorizontalScrollBarEnabled() || isVerticalScrollBarEnabled()) {
      
                    if (invalidate) {
      
                        // Invalidate to show the scrollbars
      
                        postInvalidateOnAnimation();
      
                    }
      
                    if (scrollCache.state == ScrollabilityCache.OFF) {
      
                        // FIXME: this is copied from WindowManagerService.
      
                        // We should get this value from the system when it
      
                        // is possible to do so.
      
                        final int KEY_REPEAT_FIRST_DELAY = 750;
      
                        startDelay = Math.max(KEY_REPEAT_FIRST_DELAY, startDelay);
      
                    }
      
                    // Tell mScrollCache when we should start fading. This may
      
                    // extend the fade start time if one was already scheduled
      
                    long fadeStartTime = AnimationUtils.currentAnimationTimeMillis() + startDelay;
      
                    scrollCache.fadeStartTime = fadeStartTime;
      
                    scrollCache.state = ScrollabilityCache.ON;
      
                    // Schedule our fader to run, unscheduling any old ones first
      
                    if (mAttachInfo != null) {
      
                        mAttachInfo.mHandler.removeCallbacks(scrollCache);
      
                        mAttachInfo.mHandler.postAtTime(scrollCache, fadeStartTime);
      
                    }
      
                    return true;
      
                }
      
                return false;
      
            }
      
            /**
      
             * Do not invalidate views which are not visible and which are not running an animation. They
      
             * will not get drawn and they should not set dirty flags as if they will be drawn
      
             */
      
            private boolean skipInvalidate() {
      
                return (mViewFlags & VISIBILITY_MASK) != VISIBLE && mCurrentAnimation == null &&
      
                        (!(mParent instanceof ViewGroup) ||
      
                                !((ViewGroup) mParent).isViewTransitioning(this));
      
            }
      
            /**
      
             * Mark the area defined by dirty as needing to be drawn. If the view is
      
             * visible, {@link #onDraw(android.graphics.Canvas)} will be called at some
      
             * point in the future.
      
             * <p>
      
             * This must be called from a UI thread. To call from a non-UI thread, call
      
             * {@link #postInvalidate()}.
      
             * <p>
      
             * <b>WARNING:</b> In API 19 and below, this method may be destructive to
      
             * {@code dirty}.
      
             *
      
             * @param dirty the rectangle representing the bounds of the dirty region
      
             */
      
            public void invalidate(Rect dirty) {
      
                final int scrollX = mScrollX;
      
                final int scrollY = mScrollY;
      
                invalidateInternal(dirty.left - scrollX, dirty.top - scrollY,
      
                        dirty.right - scrollX, dirty.bottom - scrollY, true, false);
      
            }
      
            /**
      
             * Mark the area defined by the rect (l,t,r,b) as needing to be drawn. The
      
             * coordinates of the dirty rect are relative to the view. If the view is
      
             * visible, {@link #onDraw(android.graphics.Canvas)} will be called at some
      
             * point in the future.
      
             * <p>
      
             * This must be called from a UI thread. To call from a non-UI thread, call
      
             * {@link #postInvalidate()}.
      
             *
      
             * @param l the left position of the dirty region
      
             * @param t the top position of the dirty region
      
             * @param r the right position of the dirty region
      
             * @param b the bottom position of the dirty region
      
             */
      
            public void invalidate(int l, int t, int r, int b) {
      
                final int scrollX = mScrollX;
      
                final int scrollY = mScrollY;
      
                invalidateInternal(l - scrollX, t - scrollY, r - scrollX, b - scrollY, true, false);
      
            }
      
            /**
      
             * Invalidate the whole view. If the view is visible,
      
             * {@link #onDraw(android.graphics.Canvas)} will be called at some point in
      
             * the future.
      
             * <p>
      
             * This must be called from a UI thread. To call from a non-UI thread, call
      
             * {@link #postInvalidate()}.
      
             */
      
            public void invalidate() {
      
                invalidate(true);
      
            }
      
            /**
      
             * This is where the invalidate() work actually happens. A full invalidate()
      
             * causes the drawing cache to be invalidated, but this function can be
      
             * called with invalidateCache set to false to skip that invalidation step
      
             * for cases that do not need it (for example, a component that remains at
      
             * the same dimensions with the same content).
      
             *
      
             * @param invalidateCache Whether the drawing cache for this view should be
      
             *            invalidated as well. This is usually true for a full
      
             *            invalidate, but may be set to false if the View's contents or
      
             *            dimensions have not changed.
      
             */
      
            void invalidate(boolean invalidateCache) {
      
                invalidateInternal(0, 0, mRight - mLeft, mBottom - mTop, invalidateCache, true);
      
            }
      
            void invalidateInternal(int l, int t, int r, int b, boolean invalidateCache,
      
                    boolean fullInvalidate) {
      
                if (mGhostView != null) {
      
                    mGhostView.invalidate(true);
      
                    return;
      
                }
      
                if (skipInvalidate()) {
      
                    return;
      
                }
      
                if ((mPrivateFlags & (PFLAG_DRAWN | PFLAG_HAS_BOUNDS)) == (PFLAG_DRAWN | PFLAG_HAS_BOUNDS)
      
                        || (invalidateCache && (mPrivateFlags & PFLAG_DRAWING_CACHE_VALID) == PFLAG_DRAWING_CACHE_VALID)
      
                        || (mPrivateFlags & PFLAG_INVALIDATED) != PFLAG_INVALIDATED
      
                        || (fullInvalidate && isOpaque() != mLastIsOpaque)) {
      
                    if (fullInvalidate) {
      
                        mLastIsOpaque = isOpaque();
      
                        mPrivateFlags &= ~PFLAG_DRAWN;
      
                    }
      
                    mPrivateFlags |= PFLAG_DIRTY;
      
                    if (invalidateCache) {
      
                        mPrivateFlags |= PFLAG_INVALIDATED;
      
                        mPrivateFlags &= ~PFLAG_DRAWING_CACHE_VALID;
      
                    }
      
                    // Propagate the damage rectangle to the parent view.
      
                    final AttachInfo ai = mAttachInfo;
      
                    final ViewParent p = mParent;
      
                    if (p != null && ai != null && l < r && t < b) {
      
                        final Rect damage = ai.mTmpInvalRect;
      
                        damage.set(l, t, r, b);
      
                        p.invalidateChild(this, damage);
      
                    }
      
                    // Damage the entire projection receiver, if necessary.
      
                    if (mBackground != null && mBackground.isProjected()) {
      
                        final View receiver = getProjectionReceiver();
      
                        if (receiver != null) {
      
                            receiver.damageInParent();
      
                        }
      
                    }
      
                    // Damage the entire IsolatedZVolume receiving this view's shadow.
      
                    if (isHardwareAccelerated() && getZ() != 0) {
      
                        damageShadowReceiver();
      
                    }
      
                }
      
            }
      
            /**
      
             * @return this view's projection receiver, or {@code null} if none exists
      
             */
      
            private View getProjectionReceiver() {
      
                ViewParent p = getParent();
      
                while (p != null && p instanceof View) {
      
                    final View v = (View) p;
      
                    if (v.isProjectionReceiver()) {
      
                        return v;
      
                    }
      
                    p = p.getParent();
      
                }
      
                return null;
      
            }
      
            /**
      
             * @return whether the view is a projection receiver
      
             */
      
            private boolean isProjectionReceiver() {
      
                return mBackground != null;
      
            }
      
            /**
      
             * Damage area of the screen that can be covered by this View's shadow.
      
             *
      
             * This method will guarantee that any changes to shadows cast by a View
      
             * are damaged on the screen for future redraw.
      
             */
      
            private void damageShadowReceiver() {
      
                final AttachInfo ai = mAttachInfo;
      
                if (ai != null) {
      
                    ViewParent p = getParent();
      
                    if (p != null && p instanceof ViewGroup) {
      
                        final ViewGroup vg = (ViewGroup) p;
      
                        vg.damageInParent();
      
                    }
      
                }
      
            }
      
            /**
      
             * Quick invalidation for View property changes (alpha, translationXY, etc.). We don't want to
      
             * set any flags or handle all of the cases handled by the default invalidation methods.
      
             * Instead, we just want to schedule a traversal in ViewRootImpl with the appropriate
      
             * dirty rect. This method calls into fast invalidation methods in ViewGroup that
      
             * walk up the hierarchy, transforming the dirty rect as necessary.
      
             *
      
             * The method also handles normal invalidation logic if display list properties are not
      
             * being used in this view. The invalidateParent and forceRedraw flags are used by that
      
             * backup approach, to handle these cases used in the various property-setting methods.
      
             *
      
             * @param invalidateParent Force a call to invalidateParentCaches() if display list properties
      
             * are not being used in this view
      
             * @param forceRedraw Mark the view as DRAWN to force the invalidation to propagate, if display
      
             * list properties are not being used in this view
      
             */
      
            void invalidateViewProperty(boolean invalidateParent, boolean forceRedraw) {
      
                if (!isHardwareAccelerated()
      
                        || !mRenderNode.isValid()
      
                        || (mPrivateFlags & PFLAG_DRAW_ANIMATION) != 0) {
      
                    if (invalidateParent) {
      
                        invalidateParentCaches();
      
                    }
      
                    if (forceRedraw) {
      
                        mPrivateFlags |= PFLAG_DRAWN; // force another invalidation with the new orientation
      
                    }
      
                    invalidate(false);
      
                } else {
      
                    damageInParent();
      
                }
      
                if (isHardwareAccelerated() && invalidateParent && getZ() != 0) {
      
                    damageShadowReceiver();
      
                }
      
            }
      
            /**
      
             * Tells the parent view to damage this view's bounds.
      
             *
      
             * @hide
      
             */
      
            protected void damageInParent() {
      
                final AttachInfo ai = mAttachInfo;
      
                final ViewParent p = mParent;
      
                if (p != null && ai != null) {
      
                    final Rect r = ai.mTmpInvalRect;
      
                    r.set(0, 0, mRight - mLeft, mBottom - mTop);
      
                    if (mParent instanceof ViewGroup) {
      
                        ((ViewGroup) mParent).damageChild(this, r);
      
                    } else {
      
                        mParent.invalidateChild(this, r);
      
                    }
      
                }
      
            }
      
            /**
      
             * Utility method to transform a given Rect by the current matrix of this view.
      
             */
      
            void transformRect(final Rect rect) {
      
                if (!getMatrix().isIdentity()) {
      
                    RectF boundingRect = mAttachInfo.mTmpTransformRect;
      
                    boundingRect.set(rect);
      
                    getMatrix().mapRect(boundingRect);
      
                    rect.set((int) Math.floor(boundingRect.left),
      
                            (int) Math.floor(boundingRect.top),
      
                            (int) Math.ceil(boundingRect.right),
      
                            (int) Math.ceil(boundingRect.bottom));
      
                }
      
            }
      
            /**
      
             * Used to indicate that the parent of this view should clear its caches. This functionality
      
             * is used to force the parent to rebuild its display list (when hardware-accelerated),
      
             * which is necessary when various parent-managed properties of the view change, such as
      
             * alpha, translationX/Y, scrollX/Y, scaleX/Y, and rotation/X/Y. This method only
      
             * clears the parent caches and does not causes an invalidate event.
      
             *
      
             * @hide
      
             */
      
            protected void invalidateParentCaches() {
      
                if (mParent instanceof View) {
      
                    ((View) mParent).mPrivateFlags |= PFLAG_INVALIDATED;
      
                }
      
            }
      
            /**
      
             * Used to indicate that the parent of this view should be invalidated. This functionality
      
             * is used to force the parent to rebuild its display list (when hardware-accelerated),
      
             * which is necessary when various parent-managed properties of the view change, such as
      
             * alpha, translationX/Y, scrollX/Y, scaleX/Y, and rotation/X/Y. This method will propagate
      
             * an invalidation event to the parent.
      
             *
      
             * @hide
      
             */
      
            protected void invalidateParentIfNeeded() {
      
                if (isHardwareAccelerated() && mParent instanceof View) {
      
                    ((View) mParent).invalidate(true);
      
                }
      
            }
      
            /**
      
             * @hide
      
             */
      
            protected void invalidateParentIfNeededAndWasQuickRejected() {
      
                if ((mPrivateFlags2 & PFLAG2_VIEW_QUICK_REJECTED) != 0) {
      
                    // View was rejected last time it was drawn by its parent; this may have changed
      
                    invalidateParentIfNeeded();
      
                }
      
            }
      
            /**
      
             * Indicates whether this View is opaque. An opaque View guarantees that it will
      
             * draw all the pixels overlapping its bounds using a fully opaque color.
      
             *
      
             * Subclasses of View should override this method whenever possible to indicate
      
             * whether an instance is opaque. Opaque Views are treated in a special way by
      
             * the View hierarchy, possibly allowing it to perform optimizations during
      
             * invalidate/draw passes.
      
             *
      
             * @return True if this View is guaranteed to be fully opaque, false otherwise.
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public boolean isOpaque() {
      
                return (mPrivateFlags & PFLAG_OPAQUE_MASK) == PFLAG_OPAQUE_MASK &&
      
                        getFinalAlpha() >= 1.0f;
      
            }
      
            /**
      
             * @hide
      
             */
      
            protected void computeOpaqueFlags() {
      
                // Opaque if:
      
                //   - Has a background
      
                //   - Background is opaque
      
                //   - Doesn't have scrollbars or scrollbars overlay
      
                if (mBackground != null && mBackground.getOpacity() == PixelFormat.OPAQUE) {
      
                    mPrivateFlags |= PFLAG_OPAQUE_BACKGROUND;
      
                } else {
      
                    mPrivateFlags &= ~PFLAG_OPAQUE_BACKGROUND;
      
                }
      
                final int flags = mViewFlags;
      
                if (((flags & SCROLLBARS_VERTICAL) == 0 && (flags & SCROLLBARS_HORIZONTAL) == 0) ||
      
                        (flags & SCROLLBARS_STYLE_MASK) == SCROLLBARS_INSIDE_OVERLAY ||
      
                        (flags & SCROLLBARS_STYLE_MASK) == SCROLLBARS_OUTSIDE_OVERLAY) {
      
                    mPrivateFlags |= PFLAG_OPAQUE_SCROLLBARS;
      
                } else {
      
                    mPrivateFlags &= ~PFLAG_OPAQUE_SCROLLBARS;
      
                }
      
            }
      
            /**
      
             * @hide
      
             */
      
            protected boolean hasOpaqueScrollbars() {
      
                return (mPrivateFlags & PFLAG_OPAQUE_SCROLLBARS) == PFLAG_OPAQUE_SCROLLBARS;
      
            }
      
            /**
      
             * @return A handler associated with the thread running the View. This
      
             * handler can be used to pump events in the UI events queue.
      
             */
      
            public Handler getHandler() {
      
                final AttachInfo attachInfo = mAttachInfo;
      
                if (attachInfo != null) {
      
                    return attachInfo.mHandler;
      
                }
      
                return null;
      
            }
      
            /**
      
             * Gets the view root associated with the View.
      
             * @return The view root, or null if none.
      
             * @hide
      
             */
      
            public ViewRootImpl getViewRootImpl() {
      
                if (mAttachInfo != null) {
      
                    return mAttachInfo.mViewRootImpl;
      
                }
      
                return null;
      
            }
      
            /**
      
             * @hide
      
             */
      
            public HardwareRenderer getHardwareRenderer() {
      
                return mAttachInfo != null ? mAttachInfo.mHardwareRenderer : null;
      
            }
      
            /**
      
             * <p>Causes the Runnable to be added to the message queue.
      
             * The runnable will be run on the user interface thread.</p>
      
             *
      
             * @param action The Runnable that will be executed.
      
             *
      
             * @return Returns true if the Runnable was successfully placed in to the
      
             *         message queue.  Returns false on failure, usually because the
      
             *         looper processing the message queue is exiting.
      
             *
      
             * @see #postDelayed
      
             * @see #removeCallbacks
      
             */
      
            public boolean post(Runnable action) {
      
                final AttachInfo attachInfo = mAttachInfo;
      
                if (attachInfo != null) {
      
                    return attachInfo.mHandler.post(action);
      
                }
      
                // Assume that post will succeed later
      
                ViewRootImpl.getRunQueue().post(action);
      
                return true;
      
            }
      
            /**
      
             * <p>Causes the Runnable to be added to the message queue, to be run
      
             * after the specified amount of time elapses.
      
             * The runnable will be run on the user interface thread.</p>
      
             *
      
             * @param action The Runnable that will be executed.
      
             * @param delayMillis The delay (in milliseconds) until the Runnable
      
             *        will be executed.
      
             *
      
             * @return true if the Runnable was successfully placed in to the
      
             *         message queue.  Returns false on failure, usually because the
      
             *         looper processing the message queue is exiting.  Note that a
      
             *         result of true does not mean the Runnable will be processed --
      
             *         if the looper is quit before the delivery time of the message
      
             *         occurs then the message will be dropped.
      
             *
      
             * @see #post
      
             * @see #removeCallbacks
      
             */
      
            public boolean postDelayed(Runnable action, long delayMillis) {
      
                final AttachInfo attachInfo = mAttachInfo;
      
                if (attachInfo != null) {
      
                    return attachInfo.mHandler.postDelayed(action, delayMillis);
      
                }
      
                // Assume that post will succeed later
      
                ViewRootImpl.getRunQueue().postDelayed(action, delayMillis);
      
                return true;
      
            }
      
            /**
      
             * <p>Causes the Runnable to execute on the next animation time step.
      
             * The runnable will be run on the user interface thread.</p>
      
             *
      
             * @param action The Runnable that will be executed.
      
             *
      
             * @see #postOnAnimationDelayed
      
             * @see #removeCallbacks
      
             */
      
            public void postOnAnimation(Runnable action) {
      
                final AttachInfo attachInfo = mAttachInfo;
      
                if (attachInfo != null) {
      
                    attachInfo.mViewRootImpl.mChoreographer.postCallback(
      
                            Choreographer.CALLBACK_ANIMATION, action, null);
      
                } else {
      
                    // Assume that post will succeed later
      
                    ViewRootImpl.getRunQueue().post(action);
      
                }
      
            }
      
            /**
      
             * <p>Causes the Runnable to execute on the next animation time step,
      
             * after the specified amount of time elapses.
      
             * The runnable will be run on the user interface thread.</p>
      
             *
      
             * @param action The Runnable that will be executed.
      
             * @param delayMillis The delay (in milliseconds) until the Runnable
      
             *        will be executed.
      
             *
      
             * @see #postOnAnimation
      
             * @see #removeCallbacks
      
             */
      
            public void postOnAnimationDelayed(Runnable action, long delayMillis) {
      
                final AttachInfo attachInfo = mAttachInfo;
      
                if (attachInfo != null) {
      
                    attachInfo.mViewRootImpl.mChoreographer.postCallbackDelayed(
      
                            Choreographer.CALLBACK_ANIMATION, action, null, delayMillis);
      
                } else {
      
                    // Assume that post will succeed later
      
                    ViewRootImpl.getRunQueue().postDelayed(action, delayMillis);
      
                }
      
            }
      
            /**
      
             * <p>Removes the specified Runnable from the message queue.</p>
      
             *
      
             * @param action The Runnable to remove from the message handling queue
      
             *
      
             * @return true if this view could ask the Handler to remove the Runnable,
      
             *         false otherwise. When the returned value is true, the Runnable
      
             *         may or may not have been actually removed from the message queue
      
             *         (for instance, if the Runnable was not in the queue already.)
      
             *
      
             * @see #post
      
             * @see #postDelayed
      
             * @see #postOnAnimation
      
             * @see #postOnAnimationDelayed
      
             */
      
            public boolean removeCallbacks(Runnable action) {
      
                if (action != null) {
      
                    final AttachInfo attachInfo = mAttachInfo;
      
                    if (attachInfo != null) {
      
                        attachInfo.mHandler.removeCallbacks(action);
      
                        attachInfo.mViewRootImpl.mChoreographer.removeCallbacks(
      
                                Choreographer.CALLBACK_ANIMATION, action, null);
      
                    }
      
                    // Assume that post will succeed later
      
                    ViewRootImpl.getRunQueue().removeCallbacks(action);
      
                }
      
                return true;
      
            }
      
            /**
      
             * <p>Cause an invalidate to happen on a subsequent cycle through the event loop.
      
             * Use this to invalidate the View from a non-UI thread.</p>
      
             *
      
             * <p>This method can be invoked from outside of the UI thread
      
             * only when this View is attached to a window.</p>
      
             *
      
             * @see #invalidate()
      
             * @see #postInvalidateDelayed(long)
      
             */
      
            public void postInvalidate() {
      
                postInvalidateDelayed(0);
      
            }
      
            /**
      
             * <p>Cause an invalidate of the specified area to happen on a subsequent cycle
      
             * through the event loop. Use this to invalidate the View from a non-UI thread.</p>
      
             *
      
             * <p>This method can be invoked from outside of the UI thread
      
             * only when this View is attached to a window.</p>
      
             *
      
             * @param left The left coordinate of the rectangle to invalidate.
      
             * @param top The top coordinate of the rectangle to invalidate.
      
             * @param right The right coordinate of the rectangle to invalidate.
      
             * @param bottom The bottom coordinate of the rectangle to invalidate.
      
             *
      
             * @see #invalidate(int, int, int, int)
      
             * @see #invalidate(Rect)
      
             * @see #postInvalidateDelayed(long, int, int, int, int)
      
             */
      
            public void postInvalidate(int left, int top, int right, int bottom) {
      
                postInvalidateDelayed(0, left, top, right, bottom);
      
            }
      
            /**
      
             * <p>Cause an invalidate to happen on a subsequent cycle through the event
      
             * loop. Waits for the specified amount of time.</p>
      
             *
      
             * <p>This method can be invoked from outside of the UI thread
      
             * only when this View is attached to a window.</p>
      
             *
      
             * @param delayMilliseconds the duration in milliseconds to delay the
      
             *         invalidation by
      
             *
      
             * @see #invalidate()
      
             * @see #postInvalidate()
      
             */
      
            public void postInvalidateDelayed(long delayMilliseconds) {
      
                // We try only with the AttachInfo because there's no point in invalidating
      
                // if we are not attached to our window
      
                final AttachInfo attachInfo = mAttachInfo;
      
                if (attachInfo != null) {
      
                    attachInfo.mViewRootImpl.dispatchInvalidateDelayed(this, delayMilliseconds);
      
                }
      
            }
      
            /**
      
             * <p>Cause an invalidate of the specified area to happen on a subsequent cycle
      
             * through the event loop. Waits for the specified amount of time.</p>
      
             *
      
             * <p>This method can be invoked from outside of the UI thread
      
             * only when this View is attached to a window.</p>
      
             *
      
             * @param delayMilliseconds the duration in milliseconds to delay the
      
             *         invalidation by
      
             * @param left The left coordinate of the rectangle to invalidate.
      
             * @param top The top coordinate of the rectangle to invalidate.
      
             * @param right The right coordinate of the rectangle to invalidate.
      
             * @param bottom The bottom coordinate of the rectangle to invalidate.
      
             *
      
             * @see #invalidate(int, int, int, int)
      
             * @see #invalidate(Rect)
      
             * @see #postInvalidate(int, int, int, int)
      
             */
      
            public void postInvalidateDelayed(long delayMilliseconds, int left, int top,
      
                    int right, int bottom) {
      
                // We try only with the AttachInfo because there's no point in invalidating
      
                // if we are not attached to our window
      
                final AttachInfo attachInfo = mAttachInfo;
      
                if (attachInfo != null) {
      
                    final AttachInfo.InvalidateInfo info = AttachInfo.InvalidateInfo.obtain();
      
                    info.target = this;
      
                    info.left = left;
      
                    info.top = top;
      
                    info.right = right;
      
                    info.bottom = bottom;
      
                    attachInfo.mViewRootImpl.dispatchInvalidateRectDelayed(info, delayMilliseconds);
      
                }
      
            }
      
            /**
      
             * <p>Cause an invalidate to happen on the next animation time step, typically the
      
             * next display frame.</p>
      
             *
      
             * <p>This method can be invoked from outside of the UI thread
      
             * only when this View is attached to a window.</p>
      
             *
      
             * @see #invalidate()
      
             */
      
            public void postInvalidateOnAnimation() {
      
                // We try only with the AttachInfo because there's no point in invalidating
      
                // if we are not attached to our window
      
                final AttachInfo attachInfo = mAttachInfo;
      
                if (attachInfo != null) {
      
                    attachInfo.mViewRootImpl.dispatchInvalidateOnAnimation(this);
      
                }
      
            }
      
            /**
      
             * <p>Cause an invalidate of the specified area to happen on the next animation
      
             * time step, typically the next display frame.</p>
      
             *
      
             * <p>This method can be invoked from outside of the UI thread
      
             * only when this View is attached to a window.</p>
      
             *
      
             * @param left The left coordinate of the rectangle to invalidate.
      
             * @param top The top coordinate of the rectangle to invalidate.
      
             * @param right The right coordinate of the rectangle to invalidate.
      
             * @param bottom The bottom coordinate of the rectangle to invalidate.
      
             *
      
             * @see #invalidate(int, int, int, int)
      
             * @see #invalidate(Rect)
      
             */
      
            public void postInvalidateOnAnimation(int left, int top, int right, int bottom) {
      
                // We try only with the AttachInfo because there's no point in invalidating
      
                // if we are not attached to our window
      
                final AttachInfo attachInfo = mAttachInfo;
      
                if (attachInfo != null) {
      
                    final AttachInfo.InvalidateInfo info = AttachInfo.InvalidateInfo.obtain();
      
                    info.target = this;
      
                    info.left = left;
      
                    info.top = top;
      
                    info.right = right;
      
                    info.bottom = bottom;
      
                    attachInfo.mViewRootImpl.dispatchInvalidateRectOnAnimation(info);
      
                }
      
            }
      
            /**
      
             * Post a callback to send a {@link AccessibilityEvent#TYPE_VIEW_SCROLLED} event.
      
             * This event is sent at most once every
      
             * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}.
      
             */
      
            private void postSendViewScrolledAccessibilityEventCallback() {
      
                if (mSendViewScrolledAccessibilityEvent == null) {
      
                    mSendViewScrolledAccessibilityEvent = new SendViewScrolledAccessibilityEvent();
      
                }
      
                if (!mSendViewScrolledAccessibilityEvent.mIsPending) {
      
                    mSendViewScrolledAccessibilityEvent.mIsPending = true;
      
                    postDelayed(mSendViewScrolledAccessibilityEvent,
      
                            ViewConfiguration.getSendRecurringAccessibilityEventsInterval());
      
                }
      
            }
      
            /**
      
             * Called by a parent to request that a child update its values for mScrollX
      
             * and mScrollY if necessary. This will typically be done if the child is
      
             * animating a scroll using a {@link android.widget.Scroller Scroller}
      
             * object.
      
             */
      
            public void computeScroll() {
      
            }
      
            /**
      
             * <p>Indicate whether the horizontal edges are faded when the view is
      
             * scrolled horizontally.</p>
      
             *
      
             * @return true if the horizontal edges should are faded on scroll, false
      
             *         otherwise
      
             *
      
             * @see #setHorizontalFadingEdgeEnabled(boolean)
      
             *
      
             * @attr ref android.R.styleable#View_requiresFadingEdge
      
             */
      
            public boolean isHorizontalFadingEdgeEnabled() {
      
                return (mViewFlags & FADING_EDGE_HORIZONTAL) == FADING_EDGE_HORIZONTAL;
      
            }
      
            /**
      
             * <p>Define whether the horizontal edges should be faded when this view
      
             * is scrolled horizontally.</p>
      
             *
      
             * @param horizontalFadingEdgeEnabled true if the horizontal edges should
      
             *                                    be faded when the view is scrolled
      
             *                                    horizontally
      
             *
      
             * @see #isHorizontalFadingEdgeEnabled()
      
             *
      
             * @attr ref android.R.styleable#View_requiresFadingEdge
      
             */
      
            public void setHorizontalFadingEdgeEnabled(boolean horizontalFadingEdgeEnabled) {
      
                if (isHorizontalFadingEdgeEnabled() != horizontalFadingEdgeEnabled) {
      
                    if (horizontalFadingEdgeEnabled) {
      
                        initScrollCache();
      
                    }
      
                    mViewFlags ^= FADING_EDGE_HORIZONTAL;
      
                }
      
            }
      
            /**
      
             * <p>Indicate whether the vertical edges are faded when the view is
      
             * scrolled horizontally.</p>
      
             *
      
             * @return true if the vertical edges should are faded on scroll, false
      
             *         otherwise
      
             *
      
             * @see #setVerticalFadingEdgeEnabled(boolean)
      
             *
      
             * @attr ref android.R.styleable#View_requiresFadingEdge
      
             */
      
            public boolean isVerticalFadingEdgeEnabled() {
      
                return (mViewFlags & FADING_EDGE_VERTICAL) == FADING_EDGE_VERTICAL;
      
            }
      
            /**
      
             * <p>Define whether the vertical edges should be faded when this view
      
             * is scrolled vertically.</p>
      
             *
      
             * @param verticalFadingEdgeEnabled true if the vertical edges should
      
             *                                  be faded when the view is scrolled
      
             *                                  vertically
      
             *
      
             * @see #isVerticalFadingEdgeEnabled()
      
             *
      
             * @attr ref android.R.styleable#View_requiresFadingEdge
      
             */
      
            public void setVerticalFadingEdgeEnabled(boolean verticalFadingEdgeEnabled) {
      
                if (isVerticalFadingEdgeEnabled() != verticalFadingEdgeEnabled) {
      
                    if (verticalFadingEdgeEnabled) {
      
                        initScrollCache();
      
                    }
      
                    mViewFlags ^= FADING_EDGE_VERTICAL;
      
                }
      
            }
      
            /**
      
             * Returns the strength, or intensity, of the top faded edge. The strength is
      
             * a value between 0.0 (no fade) and 1.0 (full fade). The default implementation
      
             * returns 0.0 or 1.0 but no value in between.
      
             *
      
             * Subclasses should override this method to provide a smoother fade transition
      
             * when scrolling occurs.
      
             *
      
             * @return the intensity of the top fade as a float between 0.0f and 1.0f
      
             */
      
            protected float getTopFadingEdgeStrength() {
      
                return computeVerticalScrollOffset() > 0 ? 1.0f : 0.0f;
      
            }
      
            /**
      
             * Returns the strength, or intensity, of the bottom faded edge. The strength is
      
             * a value between 0.0 (no fade) and 1.0 (full fade). The default implementation
      
             * returns 0.0 or 1.0 but no value in between.
      
             *
      
             * Subclasses should override this method to provide a smoother fade transition
      
             * when scrolling occurs.
      
             *
      
             * @return the intensity of the bottom fade as a float between 0.0f and 1.0f
      
             */
      
            protected float getBottomFadingEdgeStrength() {
      
                return computeVerticalScrollOffset() + computeVerticalScrollExtent() <
      
                        computeVerticalScrollRange() ? 1.0f : 0.0f;
      
            }
      
            /**
      
             * Returns the strength, or intensity, of the left faded edge. The strength is
      
             * a value between 0.0 (no fade) and 1.0 (full fade). The default implementation
      
             * returns 0.0 or 1.0 but no value in between.
      
             *
      
             * Subclasses should override this method to provide a smoother fade transition
      
             * when scrolling occurs.
      
             *
      
             * @return the intensity of the left fade as a float between 0.0f and 1.0f
      
             */
      
            protected float getLeftFadingEdgeStrength() {
      
                return computeHorizontalScrollOffset() > 0 ? 1.0f : 0.0f;
      
            }
      
            /**
      
             * Returns the strength, or intensity, of the right faded edge. The strength is
      
             * a value between 0.0 (no fade) and 1.0 (full fade). The default implementation
      
             * returns 0.0 or 1.0 but no value in between.
      
             *
      
             * Subclasses should override this method to provide a smoother fade transition
      
             * when scrolling occurs.
      
             *
      
             * @return the intensity of the right fade as a float between 0.0f and 1.0f
      
             */
      
            protected float getRightFadingEdgeStrength() {
      
                return computeHorizontalScrollOffset() + computeHorizontalScrollExtent() <
      
                        computeHorizontalScrollRange() ? 1.0f : 0.0f;
      
            }
      
            /**
      
             * <p>Indicate whether the horizontal scrollbar should be drawn or not. The
      
             * scrollbar is not drawn by default.</p>
      
             *
      
             * @return true if the horizontal scrollbar should be painted, false
      
             *         otherwise
      
             *
      
             * @see #setHorizontalScrollBarEnabled(boolean)
      
             */
      
            public boolean isHorizontalScrollBarEnabled() {
      
                return (mViewFlags & SCROLLBARS_HORIZONTAL) == SCROLLBARS_HORIZONTAL;
      
            }
      
            /**
      
             * <p>Define whether the horizontal scrollbar should be drawn or not. The
      
             * scrollbar is not drawn by default.</p>
      
             *
      
             * @param horizontalScrollBarEnabled true if the horizontal scrollbar should
      
             *                                   be painted
      
             *
      
             * @see #isHorizontalScrollBarEnabled()
      
             */
      
            public void setHorizontalScrollBarEnabled(boolean horizontalScrollBarEnabled) {
      
                if (isHorizontalScrollBarEnabled() != horizontalScrollBarEnabled) {
      
                    mViewFlags ^= SCROLLBARS_HORIZONTAL;
      
                    computeOpaqueFlags();
      
                    resolvePadding();
      
                }
      
            }
      
            /**
      
             * <p>Indicate whether the vertical scrollbar should be drawn or not. The
      
             * scrollbar is not drawn by default.</p>
      
             *
      
             * @return true if the vertical scrollbar should be painted, false
      
             *         otherwise
      
             *
      
             * @see #setVerticalScrollBarEnabled(boolean)
      
             */
      
            public boolean isVerticalScrollBarEnabled() {
      
                return (mViewFlags & SCROLLBARS_VERTICAL) == SCROLLBARS_VERTICAL;
      
            }
      
            /**
      
             * <p>Define whether the vertical scrollbar should be drawn or not. The
      
             * scrollbar is not drawn by default.</p>
      
             *
      
             * @param verticalScrollBarEnabled true if the vertical scrollbar should
      
             *                                 be painted
      
             *
      
             * @see #isVerticalScrollBarEnabled()
      
             */
      
            public void setVerticalScrollBarEnabled(boolean verticalScrollBarEnabled) {
      
                if (isVerticalScrollBarEnabled() != verticalScrollBarEnabled) {
      
                    mViewFlags ^= SCROLLBARS_VERTICAL;
      
                    computeOpaqueFlags();
      
                    resolvePadding();
      
                }
      
            }
      
            /**
      
             * @hide
      
             */
      
            protected void recomputePadding() {
      
                internalSetPadding(mUserPaddingLeft, mPaddingTop, mUserPaddingRight, mUserPaddingBottom);
      
            }
      
            /**
      
             * Define whether scrollbars will fade when the view is not scrolling.
      
             *
      
             * @param fadeScrollbars whether to enable fading
      
             *
      
             * @attr ref android.R.styleable#View_fadeScrollbars
      
             */
      
            public void setScrollbarFadingEnabled(boolean fadeScrollbars) {
      
                initScrollCache();
      
                final ScrollabilityCache scrollabilityCache = mScrollCache;
      
                scrollabilityCache.fadeScrollBars = fadeScrollbars;
      
                if (fadeScrollbars) {
      
                    scrollabilityCache.state = ScrollabilityCache.OFF;
      
                } else {
      
                    scrollabilityCache.state = ScrollabilityCache.ON;
      
                }
      
            }
      
            /**
      
             *
      
             * Returns true if scrollbars will fade when this view is not scrolling
      
             *
      
             * @return true if scrollbar fading is enabled
      
             *
      
             * @attr ref android.R.styleable#View_fadeScrollbars
      
             */
      
            public boolean isScrollbarFadingEnabled() {
      
                return mScrollCache != null && mScrollCache.fadeScrollBars;
      
            }
      
            /**
      
             *
      
             * Returns the delay before scrollbars fade.
      
             *
      
             * @return the delay before scrollbars fade
      
             *
      
             * @attr ref android.R.styleable#View_scrollbarDefaultDelayBeforeFade
      
             */
      
            public int getScrollBarDefaultDelayBeforeFade() {
      
                return mScrollCache == null ? ViewConfiguration.getScrollDefaultDelay() :
      
                        mScrollCache.scrollBarDefaultDelayBeforeFade;
      
            }
      
            /**
      
             * Define the delay before scrollbars fade.
      
             *
      
             * @param scrollBarDefaultDelayBeforeFade - the delay before scrollbars fade
      
             *
      
             * @attr ref android.R.styleable#View_scrollbarDefaultDelayBeforeFade
      
             */
      
            public void setScrollBarDefaultDelayBeforeFade(int scrollBarDefaultDelayBeforeFade) {
      
                getScrollCache().scrollBarDefaultDelayBeforeFade = scrollBarDefaultDelayBeforeFade;
      
            }
      
            /**
      
             *
      
             * Returns the scrollbar fade duration.
      
             *
      
             * @return the scrollbar fade duration
      
             *
      
             * @attr ref android.R.styleable#View_scrollbarFadeDuration
      
             */
      
            public int getScrollBarFadeDuration() {
      
                return mScrollCache == null ? ViewConfiguration.getScrollBarFadeDuration() :
      
                        mScrollCache.scrollBarFadeDuration;
      
            }
      
            /**
      
             * Define the scrollbar fade duration.
      
             *
      
             * @param scrollBarFadeDuration - the scrollbar fade duration
      
             *
      
             * @attr ref android.R.styleable#View_scrollbarFadeDuration
      
             */
      
            public void setScrollBarFadeDuration(int scrollBarFadeDuration) {
      
                getScrollCache().scrollBarFadeDuration = scrollBarFadeDuration;
      
            }
      
            /**
      
             *
      
             * Returns the scrollbar size.
      
             *
      
             * @return the scrollbar size
      
             *
      
             * @attr ref android.R.styleable#View_scrollbarSize
      
             */
      
            public int getScrollBarSize() {
      
                return mScrollCache == null ? ViewConfiguration.get(mContext).getScaledScrollBarSize() :
      
                        mScrollCache.scrollBarSize;
      
            }
      
            /**
      
             * Define the scrollbar size.
      
             *
      
             * @param scrollBarSize - the scrollbar size
      
             *
      
             * @attr ref android.R.styleable#View_scrollbarSize
      
             */
      
            public void setScrollBarSize(int scrollBarSize) {
      
                getScrollCache().scrollBarSize = scrollBarSize;
      
            }
      
            /**
      
             * <p>Specify the style of the scrollbars. The scrollbars can be overlaid or
      
             * inset. When inset, they add to the padding of the view. And the scrollbars
      
             * can be drawn inside the padding area or on the edge of the view. For example,
      
             * if a view has a background drawable and you want to draw the scrollbars
      
             * inside the padding specified by the drawable, you can use
      
             * SCROLLBARS_INSIDE_OVERLAY or SCROLLBARS_INSIDE_INSET. If you want them to
      
             * appear at the edge of the view, ignoring the padding, then you can use
      
             * SCROLLBARS_OUTSIDE_OVERLAY or SCROLLBARS_OUTSIDE_INSET.</p>
      
             * @param style the style of the scrollbars. Should be one of
      
             * SCROLLBARS_INSIDE_OVERLAY, SCROLLBARS_INSIDE_INSET,
      
             * SCROLLBARS_OUTSIDE_OVERLAY or SCROLLBARS_OUTSIDE_INSET.
      
             * @see #SCROLLBARS_INSIDE_OVERLAY
      
             * @see #SCROLLBARS_INSIDE_INSET
      
             * @see #SCROLLBARS_OUTSIDE_OVERLAY
      
             * @see #SCROLLBARS_OUTSIDE_INSET
      
             *
      
             * @attr ref android.R.styleable#View_scrollbarStyle
      
             */
      
            public void setScrollBarStyle(@ScrollBarStyle int style) {
      
                if (style != (mViewFlags & SCROLLBARS_STYLE_MASK)) {
      
                    mViewFlags = (mViewFlags & ~SCROLLBARS_STYLE_MASK) | (style & SCROLLBARS_STYLE_MASK);
      
                    computeOpaqueFlags();
      
                    resolvePadding();
      
                }
      
            }
      
            /**
      
             * <p>Returns the current scrollbar style.</p>
      
             * @return the current scrollbar style
      
             * @see #SCROLLBARS_INSIDE_OVERLAY
      
             * @see #SCROLLBARS_INSIDE_INSET
      
             * @see #SCROLLBARS_OUTSIDE_OVERLAY
      
             * @see #SCROLLBARS_OUTSIDE_INSET
      
             *
      
             * @attr ref android.R.styleable#View_scrollbarStyle
      
             */
      
            @ViewDebug.ExportedProperty(mapping = {
      
                    @ViewDebug.IntToString(from = SCROLLBARS_INSIDE_OVERLAY, to = "INSIDE_OVERLAY"),
      
                    @ViewDebug.IntToString(from = SCROLLBARS_INSIDE_INSET, to = "INSIDE_INSET"),
      
                    @ViewDebug.IntToString(from = SCROLLBARS_OUTSIDE_OVERLAY, to = "OUTSIDE_OVERLAY"),
      
                    @ViewDebug.IntToString(from = SCROLLBARS_OUTSIDE_INSET, to = "OUTSIDE_INSET")
      
            })
      
            @ScrollBarStyle
      
            public int getScrollBarStyle() {
      
                return mViewFlags & SCROLLBARS_STYLE_MASK;
      
            }
      
            /**
      
             * <p>Compute the horizontal range that the horizontal scrollbar
      
             * represents.</p>
      
             *
      
             * <p>The range is expressed in arbitrary units that must be the same as the
      
             * units used by {@link #computeHorizontalScrollExtent()} and
      
             * {@link #computeHorizontalScrollOffset()}.</p>
      
             *
      
             * <p>The default range is the drawing width of this view.</p>
      
             *
      
             * @return the total horizontal range represented by the horizontal
      
             *         scrollbar
      
             *
      
             * @see #computeHorizontalScrollExtent()
      
             * @see #computeHorizontalScrollOffset()
      
             * @see android.widget.ScrollBarDrawable
      
             */
      
            protected int computeHorizontalScrollRange() {
      
                return getWidth();
      
            }
      
            /**
      
             * <p>Compute the horizontal offset of the horizontal scrollbar's thumb
      
             * within the horizontal range. This value is used to compute the position
      
             * of the thumb within the scrollbar's track.</p>
      
             *
      
             * <p>The range is expressed in arbitrary units that must be the same as the
      
             * units used by {@link #computeHorizontalScrollRange()} and
      
             * {@link #computeHorizontalScrollExtent()}.</p>
      
             *
      
             * <p>The default offset is the scroll offset of this view.</p>
      
             *
      
             * @return the horizontal offset of the scrollbar's thumb
      
             *
      
             * @see #computeHorizontalScrollRange()
      
             * @see #computeHorizontalScrollExtent()
      
             * @see android.widget.ScrollBarDrawable
      
             */
      
            protected int computeHorizontalScrollOffset() {
      
                return mScrollX;
      
            }
      
            /**
      
             * <p>Compute the horizontal extent of the horizontal scrollbar's thumb
      
             * within the horizontal range. This value is used to compute the length
      
             * of the thumb within the scrollbar's track.</p>
      
             *
      
             * <p>The range is expressed in arbitrary units that must be the same as the
      
             * units used by {@link #computeHorizontalScrollRange()} and
      
             * {@link #computeHorizontalScrollOffset()}.</p>
      
             *
      
             * <p>The default extent is the drawing width of this view.</p>
      
             *
      
             * @return the horizontal extent of the scrollbar's thumb
      
             *
      
             * @see #computeHorizontalScrollRange()
      
             * @see #computeHorizontalScrollOffset()
      
             * @see android.widget.ScrollBarDrawable
      
             */
      
            protected int computeHorizontalScrollExtent() {
      
                return getWidth();
      
            }
      
            /**
      
             * <p>Compute the vertical range that the vertical scrollbar represents.</p>
      
             *
      
             * <p>The range is expressed in arbitrary units that must be the same as the
      
             * units used by {@link #computeVerticalScrollExtent()} and
      
             * {@link #computeVerticalScrollOffset()}.</p>
      
             *
      
             * @return the total vertical range represented by the vertical scrollbar
      
             *
      
             * <p>The default range is the drawing height of this view.</p>
      
             *
      
             * @see #computeVerticalScrollExtent()
      
             * @see #computeVerticalScrollOffset()
      
             * @see android.widget.ScrollBarDrawable
      
             */
      
            protected int computeVerticalScrollRange() {
      
                return getHeight();
      
            }
      
            /**
      
             * <p>Compute the vertical offset of the vertical scrollbar's thumb
      
             * within the horizontal range. This value is used to compute the position
      
             * of the thumb within the scrollbar's track.</p>
      
             *
      
             * <p>The range is expressed in arbitrary units that must be the same as the
      
             * units used by {@link #computeVerticalScrollRange()} and
      
             * {@link #computeVerticalScrollExtent()}.</p>
      
             *
      
             * <p>The default offset is the scroll offset of this view.</p>
      
             *
      
             * @return the vertical offset of the scrollbar's thumb
      
             *
      
             * @see #computeVerticalScrollRange()
      
             * @see #computeVerticalScrollExtent()
      
             * @see android.widget.ScrollBarDrawable
      
             */
      
            protected int computeVerticalScrollOffset() {
      
                return mScrollY;
      
            }
      
            /**
      
             * <p>Compute the vertical extent of the vertical scrollbar's thumb
      
             * within the vertical range. This value is used to compute the length
      
             * of the thumb within the scrollbar's track.</p>
      
             *
      
             * <p>The range is expressed in arbitrary units that must be the same as the
      
             * units used by {@link #computeVerticalScrollRange()} and
      
             * {@link #computeVerticalScrollOffset()}.</p>
      
             *
      
             * <p>The default extent is the drawing height of this view.</p>
      
             *
      
             * @return the vertical extent of the scrollbar's thumb
      
             *
      
             * @see #computeVerticalScrollRange()
      
             * @see #computeVerticalScrollOffset()
      
             * @see android.widget.ScrollBarDrawable
      
             */
      
            protected int computeVerticalScrollExtent() {
      
                return getHeight();
      
            }
      
            /**
      
             * Check if this view can be scrolled horizontally in a certain direction.
      
             *
      
             * @param direction Negative to check scrolling left, positive to check scrolling right.
      
             * @return true if this view can be scrolled in the specified direction, false otherwise.
      
             */
      
            public boolean canScrollHorizontally(int direction) {
      
                final int offset = computeHorizontalScrollOffset();
      
                final int range = computeHorizontalScrollRange() - computeHorizontalScrollExtent();
      
                if (range == 0) return false;
      
                if (direction < 0) {
      
                    return offset > 0;
      
                } else {
      
                    return offset < range - 1;
      
                }
      
            }
      
            /**
      
             * Check if this view can be scrolled vertically in a certain direction.
      
             *
      
             * @param direction Negative to check scrolling up, positive to check scrolling down.
      
             * @return true if this view can be scrolled in the specified direction, false otherwise.
      
             */
      
            public boolean canScrollVertically(int direction) {
      
                final int offset = computeVerticalScrollOffset();
      
                final int range = computeVerticalScrollRange() - computeVerticalScrollExtent();
      
                if (range == 0) return false;
      
                if (direction < 0) {
      
                    return offset > 0;
      
                } else {
      
                    return offset < range - 1;
      
                }
      
            }
      
            void getScrollIndicatorBounds(@NonNull Rect out) {
      
                out.left = mScrollX;
      
                out.right = mScrollX + mRight - mLeft;
      
                out.top = mScrollY;
      
                out.bottom = mScrollY + mBottom - mTop;
      
            }
      
            private void onDrawScrollIndicators(Canvas c) {
      
                if ((mPrivateFlags3 & SCROLL_INDICATORS_PFLAG3_MASK) == 0) {
      
                    // No scroll indicators enabled.
      
                    return;
      
                }
      
                final Drawable dr = mScrollIndicatorDrawable;
      
                if (dr == null) {
      
                    // Scroll indicators aren't supported here.
      
                    return;
      
                }
      
                final int h = dr.getIntrinsicHeight();
      
                final int w = dr.getIntrinsicWidth();
      
                final Rect rect = mAttachInfo.mTmpInvalRect;
      
                getScrollIndicatorBounds(rect);
      
                if ((mPrivateFlags3 & PFLAG3_SCROLL_INDICATOR_TOP) != 0) {
      
                    final boolean canScrollUp = canScrollVertically(-1);
      
                    if (canScrollUp) {
      
                        dr.setBounds(rect.left, rect.top, rect.right, rect.top + h);
      
                        dr.draw(c);
      
                    }
      
                }
      
                if ((mPrivateFlags3 & PFLAG3_SCROLL_INDICATOR_BOTTOM) != 0) {
      
                    final boolean canScrollDown = canScrollVertically(1);
      
                    if (canScrollDown) {
      
                        dr.setBounds(rect.left, rect.bottom - h, rect.right, rect.bottom);
      
                        dr.draw(c);
      
                    }
      
                }
      
                final int leftRtl;
      
                final int rightRtl;
      
                if (getLayoutDirection() == LAYOUT_DIRECTION_RTL) {
      
                    leftRtl = PFLAG3_SCROLL_INDICATOR_END;
      
                    rightRtl = PFLAG3_SCROLL_INDICATOR_START;
      
                } else {
      
                    leftRtl = PFLAG3_SCROLL_INDICATOR_START;
      
                    rightRtl = PFLAG3_SCROLL_INDICATOR_END;
      
                }
      
                final int leftMask = PFLAG3_SCROLL_INDICATOR_LEFT | leftRtl;
      
                if ((mPrivateFlags3 & leftMask) != 0) {
      
                    final boolean canScrollLeft = canScrollHorizontally(-1);
      
                    if (canScrollLeft) {
      
                        dr.setBounds(rect.left, rect.top, rect.left + w, rect.bottom);
      
                        dr.draw(c);
      
                    }
      
                }
      
                final int rightMask = PFLAG3_SCROLL_INDICATOR_RIGHT | rightRtl;
      
                if ((mPrivateFlags3 & rightMask) != 0) {
      
                    final boolean canScrollRight = canScrollHorizontally(1);
      
                    if (canScrollRight) {
      
                        dr.setBounds(rect.right - w, rect.top, rect.right, rect.bottom);
      
                        dr.draw(c);
      
                    }
      
                }
      
            }
      
            /**
      
             * <p>Request the drawing of the horizontal and the vertical scrollbar. The
      
             * scrollbars are painted only if they have been awakened first.</p>
      
             *
      
             * @param canvas the canvas on which to draw the scrollbars
      
             *
      
             * @see #awakenScrollBars(int)
      
             */
      
            protected final void onDrawScrollBars(Canvas canvas) {
      
                // scrollbars are drawn only when the animation is running
      
                final ScrollabilityCache cache = mScrollCache;
      
                if (cache != null) {
      
                    int state = cache.state;
      
                    if (state == ScrollabilityCache.OFF) {
      
                        return;
      
                    }
      
                    boolean invalidate = false;
      
                    if (state == ScrollabilityCache.FADING) {
      
                        // We're fading -- get our fade interpolation
      
                        if (cache.interpolatorValues == null) {
      
                            cache.interpolatorValues = new float[1];
      
                        }
      
                        float[] values = cache.interpolatorValues;
      
                        // Stops the animation if we're done
      
                        if (cache.scrollBarInterpolator.timeToValues(values) ==
      
                                Interpolator.Result.FREEZE_END) {
      
                            cache.state = ScrollabilityCache.OFF;
      
                        } else {
      
                            cache.scrollBar.mutate().setAlpha(Math.round(values[0]));
      
                        }
      
                        // This will make the scroll bars inval themselves after
      
                        // drawing. We only want this when we're fading so that
      
                        // we prevent excessive redraws
      
                        invalidate = true;
      
                    } else {
      
                        // We're just on -- but we may have been fading before so
      
                        // reset alpha
      
                        cache.scrollBar.mutate().setAlpha(255);
      
                    }
      
                    final int viewFlags = mViewFlags;
      
                    final boolean drawHorizontalScrollBar =
      
                        (viewFlags & SCROLLBARS_HORIZONTAL) == SCROLLBARS_HORIZONTAL;
      
                    final boolean drawVerticalScrollBar =
      
                        (viewFlags & SCROLLBARS_VERTICAL) == SCROLLBARS_VERTICAL
      
                        && !isVerticalScrollBarHidden();
      
                    if (drawVerticalScrollBar || drawHorizontalScrollBar) {
      
                        final int width = mRight - mLeft;
      
                        final int height = mBottom - mTop;
      
                        final ScrollBarDrawable scrollBar = cache.scrollBar;
      
                        final int scrollX = mScrollX;
      
                        final int scrollY = mScrollY;
      
                        final int inside = (viewFlags & SCROLLBARS_OUTSIDE_MASK) == 0 ? ~0 : 0;
      
                        int left;
      
                        int top;
      
                        int right;
      
                        int bottom;
      
                        if (drawHorizontalScrollBar) {
      
                            int size = scrollBar.getSize(false);
      
                            if (size <= 0) {
      
                                size = cache.scrollBarSize;
      
                            }
      
                            scrollBar.setParameters(computeHorizontalScrollRange(),
      
                                                    computeHorizontalScrollOffset(),
      
                                                    computeHorizontalScrollExtent(), false);
      
                            final int verticalScrollBarGap = drawVerticalScrollBar ?
      
                                    getVerticalScrollbarWidth() : 0;
      
                            top = scrollY + height - size - (mUserPaddingBottom & inside);
      
                            left = scrollX + (mPaddingLeft & inside);
      
                            right = scrollX + width - (mUserPaddingRight & inside) - verticalScrollBarGap;
      
                            bottom = top + size;
      
                            onDrawHorizontalScrollBar(canvas, scrollBar, left, top, right, bottom);
      
                            if (invalidate) {
      
                                invalidate(left, top, right, bottom);
      
                            }
      
                        }
      
                        if (drawVerticalScrollBar) {
      
                            int size = scrollBar.getSize(true);
      
                            if (size <= 0) {
      
                                size = cache.scrollBarSize;
      
                            }
      
                            scrollBar.setParameters(computeVerticalScrollRange(),
      
                                                    computeVerticalScrollOffset(),
      
                                                    computeVerticalScrollExtent(), true);
      
                            int verticalScrollbarPosition = mVerticalScrollbarPosition;
      
                            if (verticalScrollbarPosition == SCROLLBAR_POSITION_DEFAULT) {
      
                                verticalScrollbarPosition = isLayoutRtl() ?
      
                                        SCROLLBAR_POSITION_LEFT : SCROLLBAR_POSITION_RIGHT;
      
                            }
      
                            switch (verticalScrollbarPosition) {
      
                                default:
      
                                case SCROLLBAR_POSITION_RIGHT:
      
                                    left = scrollX + width - size - (mUserPaddingRight & inside);
      
                                    break;
      
                                case SCROLLBAR_POSITION_LEFT:
      
                                    left = scrollX + (mUserPaddingLeft & inside);
      
                                    break;
      
                            }
      
                            top = scrollY + (mPaddingTop & inside);
      
                            right = left + size;
      
                            bottom = scrollY + height - (mUserPaddingBottom & inside);
      
                            onDrawVerticalScrollBar(canvas, scrollBar, left, top, right, bottom);
      
                            if (invalidate) {
      
                                invalidate(left, top, right, bottom);
      
                            }
      
                        }
      
                    }
      
                }
      
            }
      
            /**
      
             * Override this if the vertical scrollbar needs to be hidden in a subclass, like when
      
             * FastScroller is visible.
      
             * @return whether to temporarily hide the vertical scrollbar
      
             * @hide
      
             */
      
            protected boolean isVerticalScrollBarHidden() {
      
                return false;
      
            }
      
            /**
      
             * <p>Draw the horizontal scrollbar if
      
             * {@link #isHorizontalScrollBarEnabled()} returns true.</p>
      
             *
      
             * @param canvas the canvas on which to draw the scrollbar
      
             * @param scrollBar the scrollbar's drawable
      
             *
      
             * @see #isHorizontalScrollBarEnabled()
      
             * @see #computeHorizontalScrollRange()
      
             * @see #computeHorizontalScrollExtent()
      
             * @see #computeHorizontalScrollOffset()
      
             * @see android.widget.ScrollBarDrawable
      
             * @hide
      
             */
      
            protected void onDrawHorizontalScrollBar(Canvas canvas, Drawable scrollBar,
      
                    int l, int t, int r, int b) {
      
                scrollBar.setBounds(l, t, r, b);
      
                scrollBar.draw(canvas);
      
            }
      
            /**
      
             * <p>Draw the vertical scrollbar if {@link #isVerticalScrollBarEnabled()}
      
             * returns true.</p>
      
             *
      
             * @param canvas the canvas on which to draw the scrollbar
      
             * @param scrollBar the scrollbar's drawable
      
             *
      
             * @see #isVerticalScrollBarEnabled()
      
             * @see #computeVerticalScrollRange()
      
             * @see #computeVerticalScrollExtent()
      
             * @see #computeVerticalScrollOffset()
      
             * @see android.widget.ScrollBarDrawable
      
             * @hide
      
             */
      
            protected void onDrawVerticalScrollBar(Canvas canvas, Drawable scrollBar,
      
                    int l, int t, int r, int b) {
      
                scrollBar.setBounds(l, t, r, b);
      
                scrollBar.draw(canvas);
      
            }
      
            /**
      
             * Implement this to do your drawing.
      
             *
      
             * @param canvas the canvas on which the background will be drawn
      
             */
      
            protected void onDraw(Canvas canvas) {
      
            }
      
            /*
      
             * Caller is responsible for calling requestLayout if necessary.
      
             * (This allows addViewInLayout to not request a new layout.)
      
             */
      
            void assignParent(ViewParent parent) {
      
                if (mParent == null) {
      
                    mParent = parent;
      
                } else if (parent == null) {
      
                    mParent = null;
      
                } else {
      
                    throw new RuntimeException("view " + this + " being added, but"
      
                            + " it already has a parent");
      
                }
      
            }
      
            /**
      
             * This is called when the view is attached to a window.  At this point it
      
             * has a Surface and will start drawing.  Note that this function is
      
             * guaranteed to be called before {@link #onDraw(android.graphics.Canvas)},
      
             * however it may be called any time before the first onDraw -- including
      
             * before or after {@link #onMeasure(int, int)}.
      
             *
      
             * @see #onDetachedFromWindow()
      
             */
      
            @CallSuper
      
            protected void onAttachedToWindow() {
      
                if ((mPrivateFlags & PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) {
      
                    mParent.requestTransparentRegion(this);
      
                }
      
                mPrivateFlags3 &= ~PFLAG3_IS_LAID_OUT;
      
                jumpDrawablesToCurrentState();
      
                resetSubtreeAccessibilityStateChanged();
      
                // rebuild, since Outline not maintained while View is detached
      
                rebuildOutline();
      
                if (isFocused()) {
      
                    InputMethodManager imm = InputMethodManager.peekInstance();
      
                    if (imm != null) {
      
                        imm.focusIn(this);
      
                    }
      
                }
      
            }
      
            /**
      
             * Resolve all RTL related properties.
      
             *
      
             * @return true if resolution of RTL properties has been done
      
             *
      
             * @hide
      
             */
      
            public boolean resolveRtlPropertiesIfNeeded() {
      
                if (!needRtlPropertiesResolution()) return false;
      
                // Order is important here: LayoutDirection MUST be resolved first
      
                if (!isLayoutDirectionResolved()) {
      
                    resolveLayoutDirection();
      
                    resolveLayoutParams();
      
                }
      
                // ... then we can resolve the others properties depending on the resolved LayoutDirection.
      
                if (!isTextDirectionResolved()) {
      
                    resolveTextDirection();
      
                }
      
                if (!isTextAlignmentResolved()) {
      
                    resolveTextAlignment();
      
                }
      
                // Should resolve Drawables before Padding because we need the layout direction of the
      
                // Drawable to correctly resolve Padding.
      
                if (!areDrawablesResolved()) {
      
                    resolveDrawables();
      
                }
      
                if (!isPaddingResolved()) {
      
                    resolvePadding();
      
                }
      
                onRtlPropertiesChanged(getLayoutDirection());
      
                return true;
      
            }
      
            /**
      
             * Reset resolution of all RTL related properties.
      
             *
      
             * @hide
      
             */
      
            public void resetRtlProperties() {
      
                resetResolvedLayoutDirection();
      
                resetResolvedTextDirection();
      
                resetResolvedTextAlignment();
      
                resetResolvedPadding();
      
                resetResolvedDrawables();
      
            }
      
            /**
      
             * @see #onScreenStateChanged(int)
      
             */
      
            void dispatchScreenStateChanged(int screenState) {
      
                onScreenStateChanged(screenState);
      
            }
      
            /**
      
             * This method is called whenever the state of the screen this view is
      
             * attached to changes. A state change will usually occurs when the screen
      
             * turns on or off (whether it happens automatically or the user does it
      
             * manually.)
      
             *
      
             * @param screenState The new state of the screen. Can be either
      
             *                    {@link #SCREEN_STATE_ON} or {@link #SCREEN_STATE_OFF}
      
             */
      
            public void onScreenStateChanged(int screenState) {
      
            }
      
            /**
      
             * Return true if the application tag in the AndroidManifest has set "supportRtl" to true
      
             */
      
            private boolean hasRtlSupport() {
      
                return mContext.getApplicationInfo().hasRtlSupport();
      
            }
      
            /**
      
             * Return true if we are in RTL compatibility mode (either before Jelly Bean MR1 or
      
             * RTL not supported)
      
             */
      
            private boolean isRtlCompatibilityMode() {
      
                final int targetSdkVersion = getContext().getApplicationInfo().targetSdkVersion;
      
                return targetSdkVersion < JELLY_BEAN_MR1 || !hasRtlSupport();
      
            }
      
            /**
      
             * @return true if RTL properties need resolution.
      
             *
      
             */
      
            private boolean needRtlPropertiesResolution() {
      
                return (mPrivateFlags2 & ALL_RTL_PROPERTIES_RESOLVED) != ALL_RTL_PROPERTIES_RESOLVED;
      
            }
      
            /**
      
             * Called when any RTL property (layout direction or text direction or text alignment) has
      
             * been changed.
      
             *
      
             * Subclasses need to override this method to take care of cached information that depends on the
      
             * resolved layout direction, or to inform child views that inherit their layout direction.
      
             *
      
             * The default implementation does nothing.
      
             *
      
             * @param layoutDirection the direction of the layout
      
             *
      
             * @see #LAYOUT_DIRECTION_LTR
      
             * @see #LAYOUT_DIRECTION_RTL
      
             */
      
            public void onRtlPropertiesChanged(@ResolvedLayoutDir int layoutDirection) {
      
            }
      
            /**
      
             * Resolve and cache the layout direction. LTR is set initially. This is implicitly supposing
      
             * that the parent directionality can and will be resolved before its children.
      
             *
      
             * @return true if resolution has been done, false otherwise.
      
             *
      
             * @hide
      
             */
      
            public boolean resolveLayoutDirection() {
      
                // Clear any previous layout direction resolution
      
                mPrivateFlags2 &= ~PFLAG2_LAYOUT_DIRECTION_RESOLVED_MASK;
      
                if (hasRtlSupport()) {
      
                    // Set resolved depending on layout direction
      
                    switch ((mPrivateFlags2 & PFLAG2_LAYOUT_DIRECTION_MASK) >>
      
                            PFLAG2_LAYOUT_DIRECTION_MASK_SHIFT) {
      
                        case LAYOUT_DIRECTION_INHERIT:
      
                            // We cannot resolve yet. LTR is by default and let the resolution happen again
      
                            // later to get the correct resolved value
      
                            if (!canResolveLayoutDirection()) return false;
      
                            // Parent has not yet resolved, LTR is still the default
      
                            try {
      
                                if (!mParent.isLayoutDirectionResolved()) return false;
      
                                if (mParent.getLayoutDirection() == LAYOUT_DIRECTION_RTL) {
      
                                    mPrivateFlags2 |= PFLAG2_LAYOUT_DIRECTION_RESOLVED_RTL;
      
                                }
      
                            } catch (AbstractMethodError e) {
      
                                Log.e(VIEW_LOG_TAG, mParent.getClass().getSimpleName() +
      
                                        " does not fully implement ViewParent", e);
      
                            }
      
                            break;
      
                        case LAYOUT_DIRECTION_RTL:
      
                            mPrivateFlags2 |= PFLAG2_LAYOUT_DIRECTION_RESOLVED_RTL;
      
                            break;
      
                        case LAYOUT_DIRECTION_LOCALE:
      
                            if((LAYOUT_DIRECTION_RTL ==
      
                                    TextUtils.getLayoutDirectionFromLocale(Locale.getDefault()))) {
      
                                mPrivateFlags2 |= PFLAG2_LAYOUT_DIRECTION_RESOLVED_RTL;
      
                            }
      
                            break;
      
                        default:
      
                            // Nothing to do, LTR by default
      
                    }
      
                }
      
                // Set to resolved
      
                mPrivateFlags2 |= PFLAG2_LAYOUT_DIRECTION_RESOLVED;
      
                return true;
      
            }
      
            /**
      
             * Check if layout direction resolution can be done.
      
             *
      
             * @return true if layout direction resolution can be done otherwise return false.
      
             */
      
            public boolean canResolveLayoutDirection() {
      
                switch (getRawLayoutDirection()) {
      
                    case LAYOUT_DIRECTION_INHERIT:
      
                        if (mParent != null) {
      
                            try {
      
                                return mParent.canResolveLayoutDirection();
      
                            } catch (AbstractMethodError e) {
      
                                Log.e(VIEW_LOG_TAG, mParent.getClass().getSimpleName() +
      
                                        " does not fully implement ViewParent", e);
      
                            }
      
                        }
      
                        return false;
      
                    default:
      
                        return true;
      
                }
      
            }
      
            /**
      
             * Reset the resolved layout direction. Layout direction will be resolved during a call to
      
             * {@link #onMeasure(int, int)}.
      
             *
      
             * @hide
      
             */
      
            public void resetResolvedLayoutDirection() {
      
                // Reset the current resolved bits
      
                mPrivateFlags2 &= ~PFLAG2_LAYOUT_DIRECTION_RESOLVED_MASK;
      
            }
      
            /**
      
             * @return true if the layout direction is inherited.
      
             *
      
             * @hide
      
             */
      
            public boolean isLayoutDirectionInherited() {
      
                return (getRawLayoutDirection() == LAYOUT_DIRECTION_INHERIT);
      
            }
      
            /**
      
             * @return true if layout direction has been resolved.
      
             */
      
            public boolean isLayoutDirectionResolved() {
      
                return (mPrivateFlags2 & PFLAG2_LAYOUT_DIRECTION_RESOLVED) == PFLAG2_LAYOUT_DIRECTION_RESOLVED;
      
            }
      
            /**
      
             * Return if padding has been resolved
      
             *
      
             * @hide
      
             */
      
            boolean isPaddingResolved() {
      
                return (mPrivateFlags2 & PFLAG2_PADDING_RESOLVED) == PFLAG2_PADDING_RESOLVED;
      
            }
      
            /**
      
             * Resolves padding depending on layout direction, if applicable, and
      
             * recomputes internal padding values to adjust for scroll bars.
      
             *
      
             * @hide
      
             */
      
            public void resolvePadding() {
      
                final int resolvedLayoutDirection = getLayoutDirection();
      
                if (!isRtlCompatibilityMode()) {
      
                    // Post Jelly Bean MR1 case: we need to take the resolved layout direction into account.
      
                    // If start / end padding are defined, they will be resolved (hence overriding) to
      
                    // left / right or right / left depending on the resolved layout direction.
      
                    // If start / end padding are not defined, use the left / right ones.
      
                    if (mBackground != null && (!mLeftPaddingDefined || !mRightPaddingDefined)) {
      
                        Rect padding = sThreadLocal.get();
      
                        if (padding == null) {
      
                            padding = new Rect();
      
                            sThreadLocal.set(padding);
      
                        }
      
                        mBackground.getPadding(padding);
      
                        if (!mLeftPaddingDefined) {
      
                            mUserPaddingLeftInitial = padding.left;
      
                        }
      
                        if (!mRightPaddingDefined) {
      
                            mUserPaddingRightInitial = padding.right;
      
                        }
      
                    }
      
                    switch (resolvedLayoutDirection) {
      
                        case LAYOUT_DIRECTION_RTL:
      
                            if (mUserPaddingStart != UNDEFINED_PADDING) {
      
                                mUserPaddingRight = mUserPaddingStart;
      
                            } else {
      
                                mUserPaddingRight = mUserPaddingRightInitial;
      
                            }
      
                            if (mUserPaddingEnd != UNDEFINED_PADDING) {
      
                                mUserPaddingLeft = mUserPaddingEnd;
      
                            } else {
      
                                mUserPaddingLeft = mUserPaddingLeftInitial;
      
                            }
      
                            break;
      
                        case LAYOUT_DIRECTION_LTR:
      
                        default:
      
                            if (mUserPaddingStart != UNDEFINED_PADDING) {
      
                                mUserPaddingLeft = mUserPaddingStart;
      
                            } else {
      
                                mUserPaddingLeft = mUserPaddingLeftInitial;
      
                            }
      
                            if (mUserPaddingEnd != UNDEFINED_PADDING) {
      
                                mUserPaddingRight = mUserPaddingEnd;
      
                            } else {
      
                                mUserPaddingRight = mUserPaddingRightInitial;
      
                            }
      
                    }
      
                    mUserPaddingBottom = (mUserPaddingBottom >= 0) ? mUserPaddingBottom : mPaddingBottom;
      
                }
      
                internalSetPadding(mUserPaddingLeft, mPaddingTop, mUserPaddingRight, mUserPaddingBottom);
      
                onRtlPropertiesChanged(resolvedLayoutDirection);
      
                mPrivateFlags2 |= PFLAG2_PADDING_RESOLVED;
      
            }
      
            /**
      
             * Reset the resolved layout direction.
      
             *
      
             * @hide
      
             */
      
            public void resetResolvedPadding() {
      
                resetResolvedPaddingInternal();
      
            }
      
            /**
      
             * Used when we only want to reset *this* view's padding and not trigger overrides
      
             * in ViewGroup that reset children too.
      
             */
      
            void resetResolvedPaddingInternal() {
      
                mPrivateFlags2 &= ~PFLAG2_PADDING_RESOLVED;
      
            }
      
            /**
      
             * This is called when the view is detached from a window.  At this point it
      
             * no longer has a surface for drawing.
      
             *
      
             * @see #onAttachedToWindow()
      
             */
      
            @CallSuper
      
            protected void onDetachedFromWindow() {
      
            }
      
            /**
      
             * This is a framework-internal mirror of onDetachedFromWindow() that's called
      
             * after onDetachedFromWindow().
      
             *
      
             * If you override this you *MUST* call super.onDetachedFromWindowInternal()!
      
             * The super method should be called at the end of the overridden method to ensure
      
             * subclasses are destroyed first
      
             *
      
             * @hide
      
             */
      
            @CallSuper
      
            protected void onDetachedFromWindowInternal() {
      
                mPrivateFlags &= ~PFLAG_CANCEL_NEXT_UP_EVENT;
      
                mPrivateFlags3 &= ~PFLAG3_IS_LAID_OUT;
      
                removeUnsetPressCallback();
      
                removeLongPressCallback();
      
                removePerformClickCallback();
      
                removeSendViewScrolledAccessibilityEventCallback();
      
                stopNestedScroll();
      
                // Anything that started animating right before detach should already
      
                // be in its final state when re-attached.
      
                jumpDrawablesToCurrentState();
      
                destroyDrawingCache();
      
                cleanupDraw();
      
                mCurrentAnimation = null;
      
            }
      
            private void cleanupDraw() {
      
                resetDisplayList();
      
                if (mAttachInfo != null) {
      
                    mAttachInfo.mViewRootImpl.cancelInvalidate(this);
      
                }
      
            }
      
            void invalidateInheritedLayoutMode(int layoutModeOfRoot) {
      
            }
      
            /**
      
             * @return The number of times this view has been attached to a window
      
             */
      
            protected int getWindowAttachCount() {
      
                return mWindowAttachCount;
      
            }
      
            /**
      
             * Retrieve a unique token identifying the window this view is attached to.
      
             * @return Return the window's token for use in
      
             * {@link WindowManager.LayoutParams#token WindowManager.LayoutParams.token}.
      
             */
      
            public IBinder getWindowToken() {
      
                return mAttachInfo != null ? mAttachInfo.mWindowToken : null;
      
            }
      
            /**
      
             * Retrieve the {@link WindowId} for the window this view is
      
             * currently attached to.
      
             */
      
            public WindowId getWindowId() {
      
                if (mAttachInfo == null) {
      
                    return null;
      
                }
      
                if (mAttachInfo.mWindowId == null) {
      
                    try {
      
                        mAttachInfo.mIWindowId = mAttachInfo.mSession.getWindowId(
      
                                mAttachInfo.mWindowToken);
      
                        mAttachInfo.mWindowId = new WindowId(
      
                                mAttachInfo.mIWindowId);
      
                    } catch (RemoteException e) {
      
                    }
      
                }
      
                return mAttachInfo.mWindowId;
      
            }
      
            /**
      
             * Retrieve a unique token identifying the top-level "real" window of
      
             * the window that this view is attached to.  That is, this is like
      
             * {@link #getWindowToken}, except if the window this view in is a panel
      
             * window (attached to another containing window), then the token of
      
             * the containing window is returned instead.
      
             *
      
             * @return Returns the associated window token, either
      
             * {@link #getWindowToken()} or the containing window's token.
      
             */
      
            public IBinder getApplicationWindowToken() {
      
                AttachInfo ai = mAttachInfo;
      
                if (ai != null) {
      
                    IBinder appWindowToken = ai.mPanelParentWindowToken;
      
                    if (appWindowToken == null) {
      
                        appWindowToken = ai.mWindowToken;
      
                    }
      
                    return appWindowToken;
      
                }
      
                return null;
      
            }
      
            /**
      
             * Gets the logical display to which the view's window has been attached.
      
             *
      
             * @return The logical display, or null if the view is not currently attached to a window.
      
             */
      
            public Display getDisplay() {
      
                return mAttachInfo != null ? mAttachInfo.mDisplay : null;
      
            }
      
            /**
      
             * Retrieve private session object this view hierarchy is using to
      
             * communicate with the window manager.
      
             * @return the session object to communicate with the window manager
      
             */
      
            /*package*/ IWindowSession getWindowSession() {
      
                return mAttachInfo != null ? mAttachInfo.mSession : null;
      
            }
      
            /**
      
             * Return the visibility value of the least visible component passed.
      
             */
      
            int combineVisibility(int vis1, int vis2) {
      
                // This works because VISIBLE < INVISIBLE < GONE.
      
                return Math.max(vis1, vis2);
      
            }
      
            /**
      
             * @param info the {@link android.view.View.AttachInfo} to associated with
      
             *        this view
      
             */
      
            void dispatchAttachedToWindow(AttachInfo info, int visibility) {
      
                //System.out.println("Attached! " + this);
      
                mAttachInfo = info;
      
                if (mOverlay != null) {
      
                    mOverlay.getOverlayView().dispatchAttachedToWindow(info, visibility);
      
                }
      
                mWindowAttachCount++;
      
                // We will need to evaluate the drawable state at least once.
      
                mPrivateFlags |= PFLAG_DRAWABLE_STATE_DIRTY;
      
                if (mFloatingTreeObserver != null) {
      
                    info.mTreeObserver.merge(mFloatingTreeObserver);
      
                    mFloatingTreeObserver = null;
      
                }
      
                if ((mPrivateFlags&PFLAG_SCROLL_CONTAINER) != 0) {
      
                    mAttachInfo.mScrollContainers.add(this);
      
                    mPrivateFlags |= PFLAG_SCROLL_CONTAINER_ADDED;
      
                }
      
                performCollectViewAttributes(mAttachInfo, visibility);
      
                onAttachedToWindow();
      
                ListenerInfo li = mListenerInfo;
      
                final CopyOnWriteArrayList<OnAttachStateChangeListener> listeners =
      
                        li != null ? li.mOnAttachStateChangeListeners : null;
      
                if (listeners != null && listeners.size() > 0) {
      
                    // NOTE: because of the use of CopyOnWriteArrayList, we *must* use an iterator to
      
                    // perform the dispatching. The iterator is a safe guard against listeners that
      
                    // could mutate the list by calling the various add/remove methods. This prevents
      
                    // the array from being modified while we iterate it.
      
                    for (OnAttachStateChangeListener listener : listeners) {
      
                        listener.onViewAttachedToWindow(this);
      
                    }
      
                }
      
                int vis = info.mWindowVisibility;
      
                if (vis != GONE) {
      
                    onWindowVisibilityChanged(vis);
      
                }
      
                // Send onVisibilityChanged directly instead of dispatchVisibilityChanged.
      
                // As all views in the subtree will already receive dispatchAttachedToWindow
      
                // traversing the subtree again here is not desired.
      
                onVisibilityChanged(this, visibility);
      
                if ((mPrivateFlags&PFLAG_DRAWABLE_STATE_DIRTY) != 0) {
      
                    // If nobody has evaluated the drawable state yet, then do it now.
      
                    refreshDrawableState();
      
                }
      
                needGlobalAttributesUpdate(false);
      
            }
      
            void dispatchDetachedFromWindow() {
      
                AttachInfo info = mAttachInfo;
      
                if (info != null) {
      
                    int vis = info.mWindowVisibility;
      
                    if (vis != GONE) {
      
                        onWindowVisibilityChanged(GONE);
      
                    }
      
                }
      
                onDetachedFromWindow();
      
                onDetachedFromWindowInternal();
      
                InputMethodManager imm = InputMethodManager.peekInstance();
      
                if (imm != null) {
      
                    imm.onViewDetachedFromWindow(this);
      
                }
      
                ListenerInfo li = mListenerInfo;
      
                final CopyOnWriteArrayList<OnAttachStateChangeListener> listeners =
      
                        li != null ? li.mOnAttachStateChangeListeners : null;
      
                if (listeners != null && listeners.size() > 0) {
      
                    // NOTE: because of the use of CopyOnWriteArrayList, we *must* use an iterator to
      
                    // perform the dispatching. The iterator is a safe guard against listeners that
      
                    // could mutate the list by calling the various add/remove methods. This prevents
      
                    // the array from being modified while we iterate it.
      
                    for (OnAttachStateChangeListener listener : listeners) {
      
                        listener.onViewDetachedFromWindow(this);
      
                    }
      
                }
      
                if ((mPrivateFlags & PFLAG_SCROLL_CONTAINER_ADDED) != 0) {
      
                    mAttachInfo.mScrollContainers.remove(this);
      
                    mPrivateFlags &= ~PFLAG_SCROLL_CONTAINER_ADDED;
      
                }
      
                mAttachInfo = null;
      
                if (mOverlay != null) {
      
                    mOverlay.getOverlayView().dispatchDetachedFromWindow();
      
                }
      
            }
      
            /**
      
             * Cancel any deferred high-level input events that were previously posted to the event queue.
      
             *
      
             * <p>Many views post high-level events such as click handlers to the event queue
      
             * to run deferred in order to preserve a desired user experience - clearing visible
      
             * pressed states before executing, etc. This method will abort any events of this nature
      
             * that are currently in flight.</p>
      
             *
      
             * <p>Custom views that generate their own high-level deferred input events should override
      
             * {@link #onCancelPendingInputEvents()} and remove those pending events from the queue.</p>
      
             *
      
             * <p>This will also cancel pending input events for any child views.</p>
      
             *
      
             * <p>Note that this may not be sufficient as a debouncing strategy for clicks in all cases.
      
             * This will not impact newer events posted after this call that may occur as a result of
      
             * lower-level input events still waiting in the queue. If you are trying to prevent
      
             * double-submitted  events for the duration of some sort of asynchronous transaction
      
             * you should also take other steps to protect against unexpected double inputs e.g. calling
      
             * {@link #setEnabled(boolean) setEnabled(false)} and re-enabling the view when
      
             * the transaction completes, tracking already submitted transaction IDs, etc.</p>
      
             */
      
            public final void cancelPendingInputEvents() {
      
                dispatchCancelPendingInputEvents();
      
            }
      
            /**
      
             * Called by {@link #cancelPendingInputEvents()} to cancel input events in flight.
      
             * Overridden by ViewGroup to dispatch. Package scoped to prevent app-side meddling.
      
             */
      
            void dispatchCancelPendingInputEvents() {
      
                mPrivateFlags3 &= ~PFLAG3_CALLED_SUPER;
      
                onCancelPendingInputEvents();
      
                if ((mPrivateFlags3 & PFLAG3_CALLED_SUPER) != PFLAG3_CALLED_SUPER) {
      
                    throw new SuperNotCalledException("View " + getClass().getSimpleName() +
      
                            " did not call through to super.onCancelPendingInputEvents()");
      
                }
      
            }
      
            /**
      
             * Called as the result of a call to {@link #cancelPendingInputEvents()} on this view or
      
             * a parent view.
      
             *
      
             * <p>This method is responsible for removing any pending high-level input events that were
      
             * posted to the event queue to run later. Custom view classes that post their own deferred
      
             * high-level events via {@link #post(Runnable)}, {@link #postDelayed(Runnable, long)} or
      
             * {@link android.os.Handler} should override this method, call
      
             * <code>super.onCancelPendingInputEvents()</code> and remove those callbacks as appropriate.
      
             * </p>
      
             */
      
            public void onCancelPendingInputEvents() {
      
                removePerformClickCallback();
      
                cancelLongPress();
      
                mPrivateFlags3 |= PFLAG3_CALLED_SUPER;
      
            }
      
            /**
      
             * Store this view hierarchy's frozen state into the given container.
      
             *
      
             * @param container The SparseArray in which to save the view's state.
      
             *
      
             * @see #restoreHierarchyState(android.util.SparseArray)
      
             * @see #dispatchSaveInstanceState(android.util.SparseArray)
      
             * @see #onSaveInstanceState()
      
             */
      
            public void saveHierarchyState(SparseArray<Parcelable> container) {
      
                dispatchSaveInstanceState(container);
      
            }
      
            /**
      
             * Called by {@link #saveHierarchyState(android.util.SparseArray)} to store the state for
      
             * this view and its children. May be overridden to modify how freezing happens to a
      
             * view's children; for example, some views may want to not store state for their children.
      
             *
      
             * @param container The SparseArray in which to save the view's state.
      
             *
      
             * @see #dispatchRestoreInstanceState(android.util.SparseArray)
      
             * @see #saveHierarchyState(android.util.SparseArray)
      
             * @see #onSaveInstanceState()
      
             */
      
            protected void dispatchSaveInstanceState(SparseArray<Parcelable> container) {
      
                if (mID != NO_ID && (mViewFlags & SAVE_DISABLED_MASK) == 0) {
      
                    mPrivateFlags &= ~PFLAG_SAVE_STATE_CALLED;
      
                    Parcelable state = onSaveInstanceState();
      
                    if ((mPrivateFlags & PFLAG_SAVE_STATE_CALLED) == 0) {
      
                        throw new IllegalStateException(
      
                                "Derived class did not call super.onSaveInstanceState()");
      
                    }
      
                    if (state != null) {
      
                        // Log.i("View", "Freezing #" + Integer.toHexString(mID)
      
                        // + ": " + state);
      
                        container.put(mID, state);
      
                    }
      
                }
      
            }
      
            /**
      
             * Hook allowing a view to generate a representation of its internal state
      
             * that can later be used to create a new instance with that same state.
      
             * This state should only contain information that is not persistent or can
      
             * not be reconstructed later. For example, you will never store your
      
             * current position on screen because that will be computed again when a
      
             * new instance of the view is placed in its view hierarchy.
      
             * <p>
      
             * Some examples of things you may store here: the current cursor position
      
             * in a text view (but usually not the text itself since that is stored in a
      
             * content provider or other persistent storage), the currently selected
      
             * item in a list view.
      
             *
      
             * @return Returns a Parcelable object containing the view's current dynamic
      
             *         state, or null if there is nothing interesting to save. The
      
             *         default implementation returns null.
      
             * @see #onRestoreInstanceState(android.os.Parcelable)
      
             * @see #saveHierarchyState(android.util.SparseArray)
      
             * @see #dispatchSaveInstanceState(android.util.SparseArray)
      
             * @see #setSaveEnabled(boolean)
      
             */
      
            @CallSuper
      
            protected Parcelable onSaveInstanceState() {
      
                mPrivateFlags |= PFLAG_SAVE_STATE_CALLED;
      
                if (mStartActivityRequestWho != null) {
      
                    BaseSavedState state = new BaseSavedState(AbsSavedState.EMPTY_STATE);
      
                    state.mStartActivityRequestWhoSaved = mStartActivityRequestWho;
      
                    return state;
      
                }
      
                return BaseSavedState.EMPTY_STATE;
      
            }
      
            /**
      
             * Restore this view hierarchy's frozen state from the given container.
      
             *
      
             * @param container The SparseArray which holds previously frozen states.
      
             *
      
             * @see #saveHierarchyState(android.util.SparseArray)
      
             * @see #dispatchRestoreInstanceState(android.util.SparseArray)
      
             * @see #onRestoreInstanceState(android.os.Parcelable)
      
             */
      
            public void restoreHierarchyState(SparseArray<Parcelable> container) {
      
                dispatchRestoreInstanceState(container);
      
            }
      
            /**
      
             * Called by {@link #restoreHierarchyState(android.util.SparseArray)} to retrieve the
      
             * state for this view and its children. May be overridden to modify how restoring
      
             * happens to a view's children; for example, some views may want to not store state
      
             * for their children.
      
             *
      
             * @param container The SparseArray which holds previously saved state.
      
             *
      
             * @see #dispatchSaveInstanceState(android.util.SparseArray)
      
             * @see #restoreHierarchyState(android.util.SparseArray)
      
             * @see #onRestoreInstanceState(android.os.Parcelable)
      
             */
      
            protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) {
      
                if (mID != NO_ID) {
      
                    Parcelable state = container.get(mID);
      
                    if (state != null) {
      
                        // Log.i("View", "Restoreing #" + Integer.toHexString(mID)
      
                        // + ": " + state);
      
                        mPrivateFlags &= ~PFLAG_SAVE_STATE_CALLED;
      
                        onRestoreInstanceState(state);
      
                        if ((mPrivateFlags & PFLAG_SAVE_STATE_CALLED) == 0) {
      
                            throw new IllegalStateException(
      
                                    "Derived class did not call super.onRestoreInstanceState()");
      
                        }
      
                    }
      
                }
      
            }
      
            /**
      
             * Hook allowing a view to re-apply a representation of its internal state that had previously
      
             * been generated by {@link #onSaveInstanceState}. This function will never be called with a
      
             * null state.
      
             *
      
             * @param state The frozen state that had previously been returned by
      
             *        {@link #onSaveInstanceState}.
      
             *
      
             * @see #onSaveInstanceState()
      
             * @see #restoreHierarchyState(android.util.SparseArray)
      
             * @see #dispatchRestoreInstanceState(android.util.SparseArray)
      
             */
      
            @CallSuper
      
            protected void onRestoreInstanceState(Parcelable state) {
      
                mPrivateFlags |= PFLAG_SAVE_STATE_CALLED;
      
                if (state != null && !(state instanceof AbsSavedState)) {
      
                    throw new IllegalArgumentException("Wrong state class, expecting View State but "
      
                            + "received " + state.getClass().toString() + " instead. This usually happens "
      
                            + "when two views of different type have the same id in the same hierarchy. "
      
                            + "This view's id is " + ViewDebug.resolveId(mContext, getId()) + ". Make sure "
      
                            + "other views do not use the same id.");
      
                }
      
                if (state != null && state instanceof BaseSavedState) {
      
                    mStartActivityRequestWho = ((BaseSavedState) state).mStartActivityRequestWhoSaved;
      
                }
      
            }
      
            /**
      
             * <p>Return the time at which the drawing of the view hierarchy started.</p>
      
             *
      
             * @return the drawing start time in milliseconds
      
             */
      
            public long getDrawingTime() {
      
                return mAttachInfo != null ? mAttachInfo.mDrawingTime : 0;
      
            }
      
            /**
      
             * <p>Enables or disables the duplication of the parent's state into this view. When
      
             * duplication is enabled, this view gets its drawable state from its parent rather
      
             * than from its own internal properties.</p>
      
             *
      
             * <p>Note: in the current implementation, setting this property to true after the
      
             * view was added to a ViewGroup might have no effect at all. This property should
      
             * always be used from XML or set to true before adding this view to a ViewGroup.</p>
      
             *
      
             * <p>Note: if this view's parent addStateFromChildren property is enabled and this
      
             * property is enabled, an exception will be thrown.</p>
      
             *
      
             * <p>Note: if the child view uses and updates additional states which are unknown to the
      
             * parent, these states should not be affected by this method.</p>
      
             *
      
             * @param enabled True to enable duplication of the parent's drawable state, false
      
             *                to disable it.
      
             *
      
             * @see #getDrawableState()
      
             * @see #isDuplicateParentStateEnabled()
      
             */
      
            public void setDuplicateParentStateEnabled(boolean enabled) {
      
                setFlags(enabled ? DUPLICATE_PARENT_STATE : 0, DUPLICATE_PARENT_STATE);
      
            }
      
            /**
      
             * <p>Indicates whether this duplicates its drawable state from its parent.</p>
      
             *
      
             * @return True if this view's drawable state is duplicated from the parent,
      
             *         false otherwise
      
             *
      
             * @see #getDrawableState()
      
             * @see #setDuplicateParentStateEnabled(boolean)
      
             */
      
            public boolean isDuplicateParentStateEnabled() {
      
                return (mViewFlags & DUPLICATE_PARENT_STATE) == DUPLICATE_PARENT_STATE;
      
            }
      
            /**
      
             * <p>Specifies the type of layer backing this view. The layer can be
      
             * {@link #LAYER_TYPE_NONE}, {@link #LAYER_TYPE_SOFTWARE} or
      
             * {@link #LAYER_TYPE_HARDWARE}.</p>
      
             *
      
             * <p>A layer is associated with an optional {@link android.graphics.Paint}
      
             * instance that controls how the layer is composed on screen. The following
      
             * properties of the paint are taken into account when composing the layer:</p>
      
             * <ul>
      
             * <li>{@link android.graphics.Paint#getAlpha() Translucency (alpha)}</li>
      
             * <li>{@link android.graphics.Paint#getXfermode() Blending mode}</li>
      
             * <li>{@link android.graphics.Paint#getColorFilter() Color filter}</li>
      
             * </ul>
      
             *
      
             * <p>If this view has an alpha value set to < 1.0 by calling
      
             * {@link #setAlpha(float)}, the alpha value of the layer's paint is superseded
      
             * by this view's alpha value.</p>
      
             *
      
             * <p>Refer to the documentation of {@link #LAYER_TYPE_NONE},
      
             * {@link #LAYER_TYPE_SOFTWARE} and {@link #LAYER_TYPE_HARDWARE}
      
             * for more information on when and how to use layers.</p>
      
             *
      
             * @param layerType The type of layer to use with this view, must be one of
      
             *        {@link #LAYER_TYPE_NONE}, {@link #LAYER_TYPE_SOFTWARE} or
      
             *        {@link #LAYER_TYPE_HARDWARE}
      
             * @param paint The paint used to compose the layer. This argument is optional
      
             *        and can be null. It is ignored when the layer type is
      
             *        {@link #LAYER_TYPE_NONE}
      
             *
      
             * @see #getLayerType()
      
             * @see #LAYER_TYPE_NONE
      
             * @see #LAYER_TYPE_SOFTWARE
      
             * @see #LAYER_TYPE_HARDWARE
      
             * @see #setAlpha(float)
      
             *
      
             * @attr ref android.R.styleable#View_layerType
      
             */
      
            public void setLayerType(int layerType, Paint paint) {
      
                if (layerType < LAYER_TYPE_NONE || layerType > LAYER_TYPE_HARDWARE) {
      
                    throw new IllegalArgumentException("Layer type can only be one of: LAYER_TYPE_NONE, "
      
                            + "LAYER_TYPE_SOFTWARE or LAYER_TYPE_HARDWARE");
      
                }
      
                boolean typeChanged = mRenderNode.setLayerType(layerType);
      
                if (!typeChanged) {
      
                    setLayerPaint(paint);
      
                    return;
      
                }
      
                // Destroy any previous software drawing cache if needed
      
                if (mLayerType == LAYER_TYPE_SOFTWARE) {
      
                    destroyDrawingCache();
      
                }
      
                mLayerType = layerType;
      
                final boolean layerDisabled = (mLayerType == LAYER_TYPE_NONE);
      
                mLayerPaint = layerDisabled ? null : (paint == null ? new Paint() : paint);
      
                mRenderNode.setLayerPaint(mLayerPaint);
      
                // draw() behaves differently if we are on a layer, so we need to
      
                // invalidate() here
      
                invalidateParentCaches();
      
                invalidate(true);
      
            }
      
            /**
      
             * Updates the {@link Paint} object used with the current layer (used only if the current
      
             * layer type is not set to {@link #LAYER_TYPE_NONE}). Changed properties of the Paint
      
             * provided to {@link #setLayerType(int, android.graphics.Paint)} will be used the next time
      
             * the View is redrawn, but {@link #setLayerPaint(android.graphics.Paint)} must be called to
      
             * ensure that the view gets redrawn immediately.
      
             *
      
             * <p>A layer is associated with an optional {@link android.graphics.Paint}
      
             * instance that controls how the layer is composed on screen. The following
      
             * properties of the paint are taken into account when composing the layer:</p>
      
             * <ul>
      
             * <li>{@link android.graphics.Paint#getAlpha() Translucency (alpha)}</li>
      
             * <li>{@link android.graphics.Paint#getXfermode() Blending mode}</li>
      
             * <li>{@link android.graphics.Paint#getColorFilter() Color filter}</li>
      
             * </ul>
      
             *
      
             * <p>If this view has an alpha value set to < 1.0 by calling {@link #setAlpha(float)}, the
      
             * alpha value of the layer's paint is superseded by this view's alpha value.</p>
      
             *
      
             * @param paint The paint used to compose the layer. This argument is optional
      
             *        and can be null. It is ignored when the layer type is
      
             *        {@link #LAYER_TYPE_NONE}
      
             *
      
             * @see #setLayerType(int, android.graphics.Paint)
      
             */
      
            public void setLayerPaint(Paint paint) {
      
                int layerType = getLayerType();
      
                if (layerType != LAYER_TYPE_NONE) {
      
                    mLayerPaint = paint == null ? new Paint() : paint;
      
                    if (layerType == LAYER_TYPE_HARDWARE) {
      
                        if (mRenderNode.setLayerPaint(mLayerPaint)) {
      
                            invalidateViewProperty(false, false);
      
                        }
      
                    } else {
      
                        invalidate();
      
                    }
      
                }
      
            }
      
            /**
      
             * Indicates what type of layer is currently associated with this view. By default
      
             * a view does not have a layer, and the layer type is {@link #LAYER_TYPE_NONE}.
      
             * Refer to the documentation of {@link #setLayerType(int, android.graphics.Paint)}
      
             * for more information on the different types of layers.
      
             *
      
             * @return {@link #LAYER_TYPE_NONE}, {@link #LAYER_TYPE_SOFTWARE} or
      
             *         {@link #LAYER_TYPE_HARDWARE}
      
             *
      
             * @see #setLayerType(int, android.graphics.Paint)
      
             * @see #buildLayer()
      
             * @see #LAYER_TYPE_NONE
      
             * @see #LAYER_TYPE_SOFTWARE
      
             * @see #LAYER_TYPE_HARDWARE
      
             */
      
            public int getLayerType() {
      
                return mLayerType;
      
            }
      
            /**
      
             * Forces this view's layer to be created and this view to be rendered
      
             * into its layer. If this view's layer type is set to {@link #LAYER_TYPE_NONE},
      
             * invoking this method will have no effect.
      
             *
      
             * This method can for instance be used to render a view into its layer before
      
             * starting an animation. If this view is complex, rendering into the layer
      
             * before starting the animation will avoid skipping frames.
      
             *
      
             * @throws IllegalStateException If this view is not attached to a window
      
             *
      
             * @see #setLayerType(int, android.graphics.Paint)
      
             */
      
            public void buildLayer() {
      
                if (mLayerType == LAYER_TYPE_NONE) return;
      
                final AttachInfo attachInfo = mAttachInfo;
      
                if (attachInfo == null) {
      
                    throw new IllegalStateException("This view must be attached to a window first");
      
                }
      
                if (getWidth() == 0 || getHeight() == 0) {
      
                    return;
      
                }
      
                switch (mLayerType) {
      
                    case LAYER_TYPE_HARDWARE:
      
                        updateDisplayListIfDirty();
      
                        if (attachInfo.mHardwareRenderer != null && mRenderNode.isValid()) {
      
                            attachInfo.mHardwareRenderer.buildLayer(mRenderNode);
      
                        }
      
                        break;
      
                    case LAYER_TYPE_SOFTWARE:
      
                        buildDrawingCache(true);
      
                        break;
      
                }
      
            }
      
            /**
      
             * If this View draws with a HardwareLayer, returns it.
      
             * Otherwise returns null
      
             *
      
             * TODO: Only TextureView uses this, can we eliminate it?
      
             */
      
            HardwareLayer getHardwareLayer() {
      
                return null;
      
            }
      
            /**
      
             * Destroys all hardware rendering resources. This method is invoked
      
             * when the system needs to reclaim resources. Upon execution of this
      
             * method, you should free any OpenGL resources created by the view.
      
             *
      
             * Note: you <strong>must</strong> call
      
             * <code>super.destroyHardwareResources()</code> when overriding
      
             * this method.
      
             *
      
             * @hide
      
             */
      
            @CallSuper
      
            protected void destroyHardwareResources() {
      
                // Although the Layer will be destroyed by RenderNode, we want to release
      
                // the staging display list, which is also a signal to RenderNode that it's
      
                // safe to free its copy of the display list as it knows that we will
      
                // push an updated DisplayList if we try to draw again
      
                resetDisplayList();
      
            }
      
            /**
      
             * <p>Enables or disables the drawing cache. When the drawing cache is enabled, the next call
      
             * to {@link #getDrawingCache()} or {@link #buildDrawingCache()} will draw the view in a
      
             * bitmap. Calling {@link #draw(android.graphics.Canvas)} will not draw from the cache when
      
             * the cache is enabled. To benefit from the cache, you must request the drawing cache by
      
             * calling {@link #getDrawingCache()} and draw it on screen if the returned bitmap is not
      
             * null.</p>
      
             *
      
             * <p>Enabling the drawing cache is similar to
      
             * {@link #setLayerType(int, android.graphics.Paint) setting a layer} when hardware
      
             * acceleration is turned off. When hardware acceleration is turned on, enabling the
      
             * drawing cache has no effect on rendering because the system uses a different mechanism
      
             * for acceleration which ignores the flag. If you want to use a Bitmap for the view, even
      
             * when hardware acceleration is enabled, see {@link #setLayerType(int, android.graphics.Paint)}
      
             * for information on how to enable software and hardware layers.</p>
      
             *
      
             * <p>This API can be used to manually generate
      
             * a bitmap copy of this view, by setting the flag to <code>true</code> and calling
      
             * {@link #getDrawingCache()}.</p>
      
             *
      
             * @param enabled true to enable the drawing cache, false otherwise
      
             *
      
             * @see #isDrawingCacheEnabled()
      
             * @see #getDrawingCache()
      
             * @see #buildDrawingCache()
      
             * @see #setLayerType(int, android.graphics.Paint)
      
             */
      
            public void setDrawingCacheEnabled(boolean enabled) {
      
                mCachingFailed = false;
      
                setFlags(enabled ? DRAWING_CACHE_ENABLED : 0, DRAWING_CACHE_ENABLED);
      
            }
      
            /**
      
             * <p>Indicates whether the drawing cache is enabled for this view.</p>
      
             *
      
             * @return true if the drawing cache is enabled
      
             *
      
             * @see #setDrawingCacheEnabled(boolean)
      
             * @see #getDrawingCache()
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public boolean isDrawingCacheEnabled() {
      
                return (mViewFlags & DRAWING_CACHE_ENABLED) == DRAWING_CACHE_ENABLED;
      
            }
      
            /**
      
             * Debugging utility which recursively outputs the dirty state of a view and its
      
             * descendants.
      
             *
      
             * @hide
      
             */
      
            @SuppressWarnings({"UnusedDeclaration"})
      
            public void outputDirtyFlags(String indent, boolean clear, int clearMask) {
      
                Log.d("View", indent + this + "             DIRTY(" + (mPrivateFlags & View.PFLAG_DIRTY_MASK) +
      
                        ") DRAWN(" + (mPrivateFlags & PFLAG_DRAWN) + ")" + " CACHE_VALID(" +
      
                        (mPrivateFlags & View.PFLAG_DRAWING_CACHE_VALID) +
      
                        ") INVALIDATED(" + (mPrivateFlags & PFLAG_INVALIDATED) + ")");
      
                if (clear) {
      
                    mPrivateFlags &= clearMask;
      
                }
      
                if (this instanceof ViewGroup) {
      
                    ViewGroup parent = (ViewGroup) this;
      
                    final int count = parent.getChildCount();
      
                    for (int i = 0; i < count; i++) {
      
                        final View child = parent.getChildAt(i);
      
                        child.outputDirtyFlags(indent + "  ", clear, clearMask);
      
                    }
      
                }
      
            }
      
            /**
      
             * This method is used by ViewGroup to cause its children to restore or recreate their
      
             * display lists. It is called by getDisplayList() when the parent ViewGroup does not need
      
             * to recreate its own display list, which would happen if it went through the normal
      
             * draw/dispatchDraw mechanisms.
      
             *
      
             * @hide
      
             */
      
            protected void dispatchGetDisplayList() {}
      
            /**
      
             * A view that is not attached or hardware accelerated cannot create a display list.
      
             * This method checks these conditions and returns the appropriate result.
      
             *
      
             * @return true if view has the ability to create a display list, false otherwise.
      
             *
      
             * @hide
      
             */
      
            public boolean canHaveDisplayList() {
      
                return !(mAttachInfo == null || mAttachInfo.mHardwareRenderer == null);
      
            }
      
            /**
      
             * Gets the RenderNode for the view, and updates its DisplayList (if needed and supported)
      
             * @hide
      
             */
      
            @NonNull
      
            public RenderNode updateDisplayListIfDirty() {
      
                final RenderNode renderNode = mRenderNode;
      
                if (!canHaveDisplayList()) {
      
                    // can't populate RenderNode, don't try
      
                    return renderNode;
      
                }
      
                if ((mPrivateFlags & PFLAG_DRAWING_CACHE_VALID) == 0
      
                        || !renderNode.isValid()
      
                        || (mRecreateDisplayList)) {
      
                    // Don't need to recreate the display list, just need to tell our
      
                    // children to restore/recreate theirs
      
                    if (renderNode.isValid()
      
                            && !mRecreateDisplayList) {
      
                        mPrivateFlags |= PFLAG_DRAWN | PFLAG_DRAWING_CACHE_VALID;
      
                        mPrivateFlags &= ~PFLAG_DIRTY_MASK;
      
                        dispatchGetDisplayList();
      
                        return renderNode; // no work needed
      
                    }
      
                    // If we got here, we're recreating it. Mark it as such to ensure that
      
                    // we copy in child display lists into ours in drawChild()
      
                    mRecreateDisplayList = true;
      
                    int width = mRight - mLeft;
      
                    int height = mBottom - mTop;
      
                    int layerType = getLayerType();
      
                    final DisplayListCanvas canvas = renderNode.start(width, height);
      
                    canvas.setHighContrastText(mAttachInfo.mHighContrastText);
      
                    try {
      
                        final HardwareLayer layer = getHardwareLayer();
      
                        if (layer != null && layer.isValid()) {
      
                            canvas.drawHardwareLayer(layer, 0, 0, mLayerPaint);
      
                        } else if (layerType == LAYER_TYPE_SOFTWARE) {
      
                            buildDrawingCache(true);
      
                            Bitmap cache = getDrawingCache(true);
      
                            if (cache != null) {
      
                                canvas.drawBitmap(cache, 0, 0, mLayerPaint);
      
                            }
      
                        } else {
      
                            computeScroll();
      
                            canvas.translate(-mScrollX, -mScrollY);
      
                            mPrivateFlags |= PFLAG_DRAWN | PFLAG_DRAWING_CACHE_VALID;
      
                            mPrivateFlags &= ~PFLAG_DIRTY_MASK;
      
                            // Fast path for layouts with no backgrounds
      
                            if ((mPrivateFlags & PFLAG_SKIP_DRAW) == PFLAG_SKIP_DRAW) {
      
                                dispatchDraw(canvas);
      
                                if (mOverlay != null && !mOverlay.isEmpty()) {
      
                                    mOverlay.getOverlayView().draw(canvas);
      
                                }
      
                            } else {
      
                                draw(canvas);
      
                            }
      
                        }
      
                    } finally {
      
                        renderNode.end(canvas);
      
                        setDisplayListProperties(renderNode);
      
                    }
      
                } else {
      
                    mPrivateFlags |= PFLAG_DRAWN | PFLAG_DRAWING_CACHE_VALID;
      
                    mPrivateFlags &= ~PFLAG_DIRTY_MASK;
      
                }
      
                return renderNode;
      
            }
      
            private void resetDisplayList() {
      
                if (mRenderNode.isValid()) {
      
                    mRenderNode.destroyDisplayListData();
      
                }
      
                if (mBackgroundRenderNode != null && mBackgroundRenderNode.isValid()) {
      
                    mBackgroundRenderNode.destroyDisplayListData();
      
                }
      
            }
      
            /**
      
             * <p>Calling this method is equivalent to calling <code>getDrawingCache(false)</code>.</p>
      
             *
      
             * @return A non-scaled bitmap representing this view or null if cache is disabled.
      
             *
      
             * @see #getDrawingCache(boolean)
      
             */
      
            public Bitmap getDrawingCache() {
      
                return getDrawingCache(false);
      
            }
      
            /**
      
             * <p>Returns the bitmap in which this view drawing is cached. The returned bitmap
      
             * is null when caching is disabled. If caching is enabled and the cache is not ready,
      
             * this method will create it. Calling {@link #draw(android.graphics.Canvas)} will not
      
             * draw from the cache when the cache is enabled. To benefit from the cache, you must
      
             * request the drawing cache by calling this method and draw it on screen if the
      
             * returned bitmap is not null.</p>
      
             *
      
             * <p>Note about auto scaling in compatibility mode: When auto scaling is not enabled,
      
             * this method will create a bitmap of the same size as this view. Because this bitmap
      
             * will be drawn scaled by the parent ViewGroup, the result on screen might show
      
             * scaling artifacts. To avoid such artifacts, you should call this method by setting
      
             * the auto scaling to true. Doing so, however, will generate a bitmap of a different
      
             * size than the view. This implies that your application must be able to handle this
      
             * size.</p>
      
             *
      
             * @param autoScale Indicates whether the generated bitmap should be scaled based on
      
             *        the current density of the screen when the application is in compatibility
      
             *        mode.
      
             *
      
             * @return A bitmap representing this view or null if cache is disabled.
      
             *
      
             * @see #setDrawingCacheEnabled(boolean)
      
             * @see #isDrawingCacheEnabled()
      
             * @see #buildDrawingCache(boolean)
      
             * @see #destroyDrawingCache()
      
             */
      
            public Bitmap getDrawingCache(boolean autoScale) {
      
                if ((mViewFlags & WILL_NOT_CACHE_DRAWING) == WILL_NOT_CACHE_DRAWING) {
      
                    return null;
      
                }
      
                if ((mViewFlags & DRAWING_CACHE_ENABLED) == DRAWING_CACHE_ENABLED) {
      
                    buildDrawingCache(autoScale);
      
                }
      
                return autoScale ? mDrawingCache : mUnscaledDrawingCache;
      
            }
      
            /**
      
             * <p>Frees the resources used by the drawing cache. If you call
      
             * {@link #buildDrawingCache()} manually without calling
      
             * {@link #setDrawingCacheEnabled(boolean) setDrawingCacheEnabled(true)}, you
      
             * should cleanup the cache with this method afterwards.</p>
      
             *
      
             * @see #setDrawingCacheEnabled(boolean)
      
             * @see #buildDrawingCache()
      
             * @see #getDrawingCache()
      
             */
      
            public void destroyDrawingCache() {
      
                if (mDrawingCache != null) {
      
                    mDrawingCache.recycle();
      
                    mDrawingCache = null;
      
                }
      
                if (mUnscaledDrawingCache != null) {
      
                    mUnscaledDrawingCache.recycle();
      
                    mUnscaledDrawingCache = null;
      
                }
      
            }
      
            /**
      
             * Setting a solid background color for the drawing cache's bitmaps will improve
      
             * performance and memory usage. Note, though that this should only be used if this
      
             * view will always be drawn on top of a solid color.
      
             *
      
             * @param color The background color to use for the drawing cache's bitmap
      
             *
      
             * @see #setDrawingCacheEnabled(boolean)
      
             * @see #buildDrawingCache()
      
             * @see #getDrawingCache()
      
             */
      
            public void setDrawingCacheBackgroundColor(@ColorInt int color) {
      
                if (color != mDrawingCacheBackgroundColor) {
      
                    mDrawingCacheBackgroundColor = color;
      
                    mPrivateFlags &= ~PFLAG_DRAWING_CACHE_VALID;
      
                }
      
            }
      
            /**
      
             * @see #setDrawingCacheBackgroundColor(int)
      
             *
      
             * @return The background color to used for the drawing cache's bitmap
      
             */
      
            @ColorInt
      
            public int getDrawingCacheBackgroundColor() {
      
                return mDrawingCacheBackgroundColor;
      
            }
      
            /**
      
             * <p>Calling this method is equivalent to calling <code>buildDrawingCache(false)</code>.</p>
      
             *
      
             * @see #buildDrawingCache(boolean)
      
             */
      
            public void buildDrawingCache() {
      
                buildDrawingCache(false);
      
            }
      
            /**
      
             * <p>Forces the drawing cache to be built if the drawing cache is invalid.</p>
      
             *
      
             * <p>If you call {@link #buildDrawingCache()} manually without calling
      
             * {@link #setDrawingCacheEnabled(boolean) setDrawingCacheEnabled(true)}, you
      
             * should cleanup the cache by calling {@link #destroyDrawingCache()} afterwards.</p>
      
             *
      
             * <p>Note about auto scaling in compatibility mode: When auto scaling is not enabled,
      
             * this method will create a bitmap of the same size as this view. Because this bitmap
      
             * will be drawn scaled by the parent ViewGroup, the result on screen might show
      
             * scaling artifacts. To avoid such artifacts, you should call this method by setting
      
             * the auto scaling to true. Doing so, however, will generate a bitmap of a different
      
             * size than the view. This implies that your application must be able to handle this
      
             * size.</p>
      
             *
      
             * <p>You should avoid calling this method when hardware acceleration is enabled. If
      
             * you do not need the drawing cache bitmap, calling this method will increase memory
      
             * usage and cause the view to be rendered in software once, thus negatively impacting
      
             * performance.</p>
      
             *
      
             * @see #getDrawingCache()
      
             * @see #destroyDrawingCache()
      
             */
      
            public void buildDrawingCache(boolean autoScale) {
      
                if ((mPrivateFlags & PFLAG_DRAWING_CACHE_VALID) == 0 || (autoScale ?
      
                        mDrawingCache == null : mUnscaledDrawingCache == null)) {
      
                    if (Trace.isTagEnabled(Trace.TRACE_TAG_VIEW)) {
      
                        Trace.traceBegin(Trace.TRACE_TAG_VIEW,
      
                                "buildDrawingCache/SW Layer for " + getClass().getSimpleName());
      
                    }
      
                    try {
      
                        buildDrawingCacheImpl(autoScale);
      
                    } finally {
      
                        Trace.traceEnd(Trace.TRACE_TAG_VIEW);
      
                    }
      
                }
      
            }
      
            /**
      
             * private, internal implementation of buildDrawingCache, used to enable tracing
      
             */
      
            private void buildDrawingCacheImpl(boolean autoScale) {
      
                mCachingFailed = false;
      
                int width = mRight - mLeft;
      
                int height = mBottom - mTop;
      
                final AttachInfo attachInfo = mAttachInfo;
      
                final boolean scalingRequired = attachInfo != null && attachInfo.mScalingRequired;
      
                if (autoScale && scalingRequired) {
      
                    width = (int) ((width * attachInfo.mApplicationScale) + 0.5f);
      
                    height = (int) ((height * attachInfo.mApplicationScale) + 0.5f);
      
                }
      
                final int drawingCacheBackgroundColor = mDrawingCacheBackgroundColor;
      
                final boolean opaque = drawingCacheBackgroundColor != 0 || isOpaque();
      
                final boolean use32BitCache = attachInfo != null && attachInfo.mUse32BitDrawingCache;
      
                final long projectedBitmapSize = width * height * (opaque && !use32BitCache ? 2 : 4);
      
                final long drawingCacheSize =
      
                        ViewConfiguration.get(mContext).getScaledMaximumDrawingCacheSize();
      
                if (width <= 0 || height <= 0 || projectedBitmapSize > drawingCacheSize) {
      
                    if (width > 0 && height > 0) {
      
                        Log.w(VIEW_LOG_TAG, getClass().getSimpleName() + " not displayed because it is"
      
                                + " too large to fit into a software layer (or drawing cache), needs "
      
                                + projectedBitmapSize + " bytes, only "
      
                                + drawingCacheSize + " available");
      
                    }
      
                    destroyDrawingCache();
      
                    mCachingFailed = true;
      
                    return;
      
                }
      
                boolean clear = true;
      
                Bitmap bitmap = autoScale ? mDrawingCache : mUnscaledDrawingCache;
      
                if (bitmap == null || bitmap.getWidth() != width || bitmap.getHeight() != height) {
      
                    Bitmap.Config quality;
      
                    if (!opaque) {
      
                        // Never pick ARGB_4444 because it looks awful
      
                        // Keep the DRAWING_CACHE_QUALITY_LOW flag just in case
      
                        switch (mViewFlags & DRAWING_CACHE_QUALITY_MASK) {
      
                            case DRAWING_CACHE_QUALITY_AUTO:
      
                            case DRAWING_CACHE_QUALITY_LOW:
      
                            case DRAWING_CACHE_QUALITY_HIGH:
      
                            default:
      
                                quality = Bitmap.Config.ARGB_8888;
      
                                break;
      
                        }
      
                    } else {
      
                        // Optimization for translucent windows
      
                        // If the window is translucent, use a 32 bits bitmap to benefit from memcpy()
      
                        quality = use32BitCache ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565;
      
                    }
      
                    // Try to cleanup memory
      
                    if (bitmap != null) bitmap.recycle();
      
                    try {
      
                        bitmap = Bitmap.createBitmap(mResources.getDisplayMetrics(),
      
                                width, height, quality);
      
                        bitmap.setDensity(getResources().getDisplayMetrics().densityDpi);
      
                        if (autoScale) {
      
                            mDrawingCache = bitmap;
      
                        } else {
      
                            mUnscaledDrawingCache = bitmap;
      
                        }
      
                        if (opaque && use32BitCache) bitmap.setHasAlpha(false);
      
                    } catch (OutOfMemoryError e) {
      
                        // If there is not enough memory to create the bitmap cache, just
      
                        // ignore the issue as bitmap caches are not required to draw the
      
                        // view hierarchy
      
                        if (autoScale) {
      
                            mDrawingCache = null;
      
                        } else {
      
                            mUnscaledDrawingCache = null;
      
                        }
      
                        mCachingFailed = true;
      
                        return;
      
                    }
      
                    clear = drawingCacheBackgroundColor != 0;
      
                }
      
                Canvas canvas;
      
                if (attachInfo != null) {
      
                    canvas = attachInfo.mCanvas;
      
                    if (canvas == null) {
      
                        canvas = new Canvas();
      
                    }
      
                    canvas.setBitmap(bitmap);
      
                    // Temporarily clobber the cached Canvas in case one of our children
      
                    // is also using a drawing cache. Without this, the children would
      
                    // steal the canvas by attaching their own bitmap to it and bad, bad
      
                    // thing would happen (invisible views, corrupted drawings, etc.)
      
                    attachInfo.mCanvas = null;
      
                } else {
      
                    // This case should hopefully never or seldom happen
      
                    canvas = new Canvas(bitmap);
      
                }
      
                if (clear) {
      
                    bitmap.eraseColor(drawingCacheBackgroundColor);
      
                }
      
                computeScroll();
      
                final int restoreCount = canvas.save();
      
                if (autoScale && scalingRequired) {
      
                    final float scale = attachInfo.mApplicationScale;
      
                    canvas.scale(scale, scale);
      
                }
      
                canvas.translate(-mScrollX, -mScrollY);
      
                mPrivateFlags |= PFLAG_DRAWN;
      
                if (mAttachInfo == null || !mAttachInfo.mHardwareAccelerated ||
      
                        mLayerType != LAYER_TYPE_NONE) {
      
                    mPrivateFlags |= PFLAG_DRAWING_CACHE_VALID;
      
                }
      
                // Fast path for layouts with no backgrounds
      
                if ((mPrivateFlags & PFLAG_SKIP_DRAW) == PFLAG_SKIP_DRAW) {
      
                    mPrivateFlags &= ~PFLAG_DIRTY_MASK;
      
                    dispatchDraw(canvas);
      
                    if (mOverlay != null && !mOverlay.isEmpty()) {
      
                        mOverlay.getOverlayView().draw(canvas);
      
                    }
      
                } else {
      
                    draw(canvas);
      
                }
      
                canvas.restoreToCount(restoreCount);
      
                canvas.setBitmap(null);
      
                if (attachInfo != null) {
      
                    // Restore the cached Canvas for our siblings
      
                    attachInfo.mCanvas = canvas;
      
                }
      
            }
      
            /**
      
             * Create a snapshot of the view into a bitmap.  We should probably make
      
             * some form of this public, but should think about the API.
      
             */
      
            Bitmap createSnapshot(Bitmap.Config quality, int backgroundColor, boolean skipChildren) {
      
                int width = mRight - mLeft;
      
                int height = mBottom - mTop;
      
                final AttachInfo attachInfo = mAttachInfo;
      
                final float scale = attachInfo != null ? attachInfo.mApplicationScale : 1.0f;
      
                width = (int) ((width * scale) + 0.5f);
      
                height = (int) ((height * scale) + 0.5f);
      
                Bitmap bitmap = Bitmap.createBitmap(mResources.getDisplayMetrics(),
      
                        width > 0 ? width : 1, height > 0 ? height : 1, quality);
      
                if (bitmap == null) {
      
                    throw new OutOfMemoryError();
      
                }
      
                Resources resources = getResources();
      
                if (resources != null) {
      
                    bitmap.setDensity(resources.getDisplayMetrics().densityDpi);
      
                }
      
                Canvas canvas;
      
                if (attachInfo != null) {
      
                    canvas = attachInfo.mCanvas;
      
                    if (canvas == null) {
      
                        canvas = new Canvas();
      
                    }
      
                    canvas.setBitmap(bitmap);
      
                    // Temporarily clobber the cached Canvas in case one of our children
      
                    // is also using a drawing cache. Without this, the children would
      
                    // steal the canvas by attaching their own bitmap to it and bad, bad
      
                    // things would happen (invisible views, corrupted drawings, etc.)
      
                    attachInfo.mCanvas = null;
      
                } else {
      
                    // This case should hopefully never or seldom happen
      
                    canvas = new Canvas(bitmap);
      
                }
      
                if ((backgroundColor & 0xff000000) != 0) {
      
                    bitmap.eraseColor(backgroundColor);
      
                }
      
                computeScroll();
      
                final int restoreCount = canvas.save();
      
                canvas.scale(scale, scale);
      
                canvas.translate(-mScrollX, -mScrollY);
      
                // Temporarily remove the dirty mask
      
                int flags = mPrivateFlags;
      
                mPrivateFlags &= ~PFLAG_DIRTY_MASK;
      
                // Fast path for layouts with no backgrounds
      
                if ((mPrivateFlags & PFLAG_SKIP_DRAW) == PFLAG_SKIP_DRAW) {
      
                    dispatchDraw(canvas);
      
                    if (mOverlay != null && !mOverlay.isEmpty()) {
      
                        mOverlay.getOverlayView().draw(canvas);
      
                    }
      
                } else {
      
                    draw(canvas);
      
                }
      
                mPrivateFlags = flags;
      
                canvas.restoreToCount(restoreCount);
      
                canvas.setBitmap(null);
      
                if (attachInfo != null) {
      
                    // Restore the cached Canvas for our siblings
      
                    attachInfo.mCanvas = canvas;
      
                }
      
                return bitmap;
      
            }
      
            /**
      
             * Indicates whether this View is currently in edit mode. A View is usually
      
             * in edit mode when displayed within a developer tool. For instance, if
      
             * this View is being drawn by a visual user interface builder, this method
      
             * should return true.
      
             *
      
             * Subclasses should check the return value of this method to provide
      
             * different behaviors if their normal behavior might interfere with the
      
             * host environment. For instance: the class spawns a thread in its
      
             * constructor, the drawing code relies on device-specific features, etc.
      
             *
      
             * This method is usually checked in the drawing code of custom widgets.
      
             *
      
             * @return True if this View is in edit mode, false otherwise.
      
             */
      
            public boolean isInEditMode() {
      
                return false;
      
            }
      
            /**
      
             * If the View draws content inside its padding and enables fading edges,
      
             * it needs to support padding offsets. Padding offsets are added to the
      
             * fading edges to extend the length of the fade so that it covers pixels
      
             * drawn inside the padding.
      
             *
      
             * Subclasses of this class should override this method if they need
      
             * to draw content inside the padding.
      
             *
      
             * @return True if padding offset must be applied, false otherwise.
      
             *
      
             * @see #getLeftPaddingOffset()
      
             * @see #getRightPaddingOffset()
      
             * @see #getTopPaddingOffset()
      
             * @see #getBottomPaddingOffset()
      
             *
      
             * @since CURRENT
      
             */
      
            protected boolean isPaddingOffsetRequired() {
      
                return false;
      
            }
      
            /**
      
             * Amount by which to extend the left fading region. Called only when
      
             * {@link #isPaddingOffsetRequired()} returns true.
      
             *
      
             * @return The left padding offset in pixels.
      
             *
      
             * @see #isPaddingOffsetRequired()
      
             *
      
             * @since CURRENT
      
             */
      
            protected int getLeftPaddingOffset() {
      
                return 0;
      
            }
      
            /**
      
             * Amount by which to extend the right fading region. Called only when
      
             * {@link #isPaddingOffsetRequired()} returns true.
      
             *
      
             * @return The right padding offset in pixels.
      
             *
      
             * @see #isPaddingOffsetRequired()
      
             *
      
             * @since CURRENT
      
             */
      
            protected int getRightPaddingOffset() {
      
                return 0;
      
            }
      
            /**
      
             * Amount by which to extend the top fading region. Called only when
      
             * {@link #isPaddingOffsetRequired()} returns true.
      
             *
      
             * @return The top padding offset in pixels.
      
             *
      
             * @see #isPaddingOffsetRequired()
      
             *
      
             * @since CURRENT
      
             */
      
            protected int getTopPaddingOffset() {
      
                return 0;
      
            }
      
            /**
      
             * Amount by which to extend the bottom fading region. Called only when
      
             * {@link #isPaddingOffsetRequired()} returns true.
      
             *
      
             * @return The bottom padding offset in pixels.
      
             *
      
             * @see #isPaddingOffsetRequired()
      
             *
      
             * @since CURRENT
      
             */
      
            protected int getBottomPaddingOffset() {
      
                return 0;
      
            }
      
            /**
      
             * @hide
      
             * @param offsetRequired
      
             */
      
            protected int getFadeTop(boolean offsetRequired) {
      
                int top = mPaddingTop;
      
                if (offsetRequired) top += getTopPaddingOffset();
      
                return top;
      
            }
      
            /**
      
             * @hide
      
             * @param offsetRequired
      
             */
      
            protected int getFadeHeight(boolean offsetRequired) {
      
                int padding = mPaddingTop;
      
                if (offsetRequired) padding += getTopPaddingOffset();
      
                return mBottom - mTop - mPaddingBottom - padding;
      
            }
      
            /**
      
             * <p>Indicates whether this view is attached to a hardware accelerated
      
             * window or not.</p>
      
             *
      
             * <p>Even if this method returns true, it does not mean that every call
      
             * to {@link #draw(android.graphics.Canvas)} will be made with an hardware
      
             * accelerated {@link android.graphics.Canvas}. For instance, if this view
      
             * is drawn onto an offscreen {@link android.graphics.Bitmap} and its
      
             * window is hardware accelerated,
      
             * {@link android.graphics.Canvas#isHardwareAccelerated()} will likely
      
             * return false, and this method will return true.</p>
      
             *
      
             * @return True if the view is attached to a window and the window is
      
             *         hardware accelerated; false in any other case.
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            public boolean isHardwareAccelerated() {
      
                return mAttachInfo != null && mAttachInfo.mHardwareAccelerated;
      
            }
      
            /**
      
             * Sets a rectangular area on this view to which the view will be clipped
      
             * when it is drawn. Setting the value to null will remove the clip bounds
      
             * and the view will draw normally, using its full bounds.
      
             *
      
             * @param clipBounds The rectangular area, in the local coordinates of
      
             * this view, to which future drawing operations will be clipped.
      
             */
      
            public void setClipBounds(Rect clipBounds) {
      
                if (clipBounds == mClipBounds
      
                        || (clipBounds != null && clipBounds.equals(mClipBounds))) {
      
                    return;
      
                }
      
                if (clipBounds != null) {
      
                    if (mClipBounds == null) {
      
                        mClipBounds = new Rect(clipBounds);
      
                    } else {
      
                        mClipBounds.set(clipBounds);
      
                    }
      
                } else {
      
                    mClipBounds = null;
      
                }
      
                mRenderNode.setClipBounds(mClipBounds);
      
                invalidateViewProperty(false, false);
      
            }
      
            /**
      
             * Returns a copy of the current {@link #setClipBounds(Rect) clipBounds}.
      
             *
      
             * @return A copy of the current clip bounds if clip bounds are set,
      
             * otherwise null.
      
             */
      
            public Rect getClipBounds() {
      
                return (mClipBounds != null) ? new Rect(mClipBounds) : null;
      
            }
      
            /**
      
             * Populates an output rectangle with the clip bounds of the view,
      
             * returning {@code true} if successful or {@code false} if the view's
      
             * clip bounds are {@code null}.
      
             *
      
             * @param outRect rectangle in which to place the clip bounds of the view
      
             * @return {@code true} if successful or {@code false} if the view's
      
             *         clip bounds are {@code null}
      
             */
      
            public boolean getClipBounds(Rect outRect) {
      
                if (mClipBounds != null) {
      
                    outRect.set(mClipBounds);
      
                    return true;
      
                }
      
                return false;
      
            }
      
            /**
      
             * Utility function, called by draw(canvas, parent, drawingTime) to handle the less common
      
             * case of an active Animation being run on the view.
      
             */
      
            private boolean applyLegacyAnimation(ViewGroup parent, long drawingTime,
      
                    Animation a, boolean scalingRequired) {
      
                Transformation invalidationTransform;
      
                final int flags = parent.mGroupFlags;
      
                final boolean initialized = a.isInitialized();
      
                if (!initialized) {
      
                    a.initialize(mRight - mLeft, mBottom - mTop, parent.getWidth(), parent.getHeight());
      
                    a.initializeInvalidateRegion(0, 0, mRight - mLeft, mBottom - mTop);
      
                    if (mAttachInfo != null) a.setListenerHandler(mAttachInfo.mHandler);
      
                    onAnimationStart();
      
                }
      
                final Transformation t = parent.getChildTransformation();
      
                boolean more = a.getTransformation(drawingTime, t, 1f);
      
                if (scalingRequired && mAttachInfo.mApplicationScale != 1f) {
      
                    if (parent.mInvalidationTransformation == null) {
      
                        parent.mInvalidationTransformation = new Transformation();
      
                    }
      
                    invalidationTransform = parent.mInvalidationTransformation;
      
                    a.getTransformation(drawingTime, invalidationTransform, 1f);
      
                } else {
      
                    invalidationTransform = t;
      
                }
      
                if (more) {
      
                    if (!a.willChangeBounds()) {
      
                        if ((flags & (ViewGroup.FLAG_OPTIMIZE_INVALIDATE | ViewGroup.FLAG_ANIMATION_DONE)) ==
      
                                ViewGroup.FLAG_OPTIMIZE_INVALIDATE) {
      
                            parent.mGroupFlags |= ViewGroup.FLAG_INVALIDATE_REQUIRED;
      
                        } else if ((flags & ViewGroup.FLAG_INVALIDATE_REQUIRED) == 0) {
      
                            // The child need to draw an animation, potentially offscreen, so
      
                            // make sure we do not cancel invalidate requests
      
                            parent.mPrivateFlags |= PFLAG_DRAW_ANIMATION;
      
                            parent.invalidate(mLeft, mTop, mRight, mBottom);
      
                        }
      
                    } else {
      
                        if (parent.mInvalidateRegion == null) {
      
                            parent.mInvalidateRegion = new RectF();
      
                        }
      
                        final RectF region = parent.mInvalidateRegion;
      
                        a.getInvalidateRegion(0, 0, mRight - mLeft, mBottom - mTop, region,
      
                                invalidationTransform);
      
                        // The child need to draw an animation, potentially offscreen, so
      
                        // make sure we do not cancel invalidate requests
      
                        parent.mPrivateFlags |= PFLAG_DRAW_ANIMATION;
      
                        final int left = mLeft + (int) region.left;
      
                        final int top = mTop + (int) region.top;
      
                        parent.invalidate(left, top, left + (int) (region.width() + .5f),
      
                                top + (int) (region.height() + .5f));
      
                    }
      
                }
      
                return more;
      
            }
      
            /**
      
             * This method is called by getDisplayList() when a display list is recorded for a View.
      
             * It pushes any properties to the RenderNode that aren't managed by the RenderNode.
      
             */
      
            void setDisplayListProperties(RenderNode renderNode) {
      
                if (renderNode != null) {
      
                    renderNode.setHasOverlappingRendering(hasOverlappingRendering());
      
                    renderNode.setClipToBounds(mParent instanceof ViewGroup
      
                            && ((ViewGroup) mParent).getClipChildren());
      
                    float alpha = 1;
      
                    if (mParent instanceof ViewGroup && (((ViewGroup) mParent).mGroupFlags &
      
                            ViewGroup.FLAG_SUPPORT_STATIC_TRANSFORMATIONS) != 0) {
      
                        ViewGroup parentVG = (ViewGroup) mParent;
      
                        final Transformation t = parentVG.getChildTransformation();
      
                        if (parentVG.getChildStaticTransformation(this, t)) {
      
                            final int transformType = t.getTransformationType();
      
                            if (transformType != Transformation.TYPE_IDENTITY) {
      
                                if ((transformType & Transformation.TYPE_ALPHA) != 0) {
      
                                    alpha = t.getAlpha();
      
                                }
      
                                if ((transformType & Transformation.TYPE_MATRIX) != 0) {
      
                                    renderNode.setStaticMatrix(t.getMatrix());
      
                                }
      
                            }
      
                        }
      
                    }
      
                    if (mTransformationInfo != null) {
      
                        alpha *= getFinalAlpha();
      
                        if (alpha < 1) {
      
                            final int multipliedAlpha = (int) (255 * alpha);
      
                            if (onSetAlpha(multipliedAlpha)) {
      
                                alpha = 1;
      
                            }
      
                        }
      
                        renderNode.setAlpha(alpha);
      
                    } else if (alpha < 1) {
      
                        renderNode.setAlpha(alpha);
      
                    }
      
                }
      
            }
      
            /**
      
             * This method is called by ViewGroup.drawChild() to have each child view draw itself.
      
             *
      
             * This is where the View specializes rendering behavior based on layer type,
      
             * and hardware acceleration.
      
             */
      
            boolean draw(Canvas canvas, ViewGroup parent, long drawingTime) {
      
                final boolean hardwareAcceleratedCanvas = canvas.isHardwareAccelerated();
      
                /* If an attached view draws to a HW canvas, it may use its RenderNode + DisplayList.
      
                 *
      
                 * If a view is dettached, its DisplayList shouldn't exist. If the canvas isn't
      
                 * HW accelerated, it can't handle drawing RenderNodes.
      
                 */
      
                boolean drawingWithRenderNode = mAttachInfo != null
      
                        && mAttachInfo.mHardwareAccelerated
      
                        && hardwareAcceleratedCanvas;
      
                boolean more = false;
      
                final boolean childHasIdentityMatrix = hasIdentityMatrix();
      
                final int parentFlags = parent.mGroupFlags;
      
                if ((parentFlags & ViewGroup.FLAG_CLEAR_TRANSFORMATION) != 0) {
      
                    parent.getChildTransformation().clear();
      
                    parent.mGroupFlags &= ~ViewGroup.FLAG_CLEAR_TRANSFORMATION;
      
                }
      
                Transformation transformToApply = null;
      
                boolean concatMatrix = false;
      
                final boolean scalingRequired = mAttachInfo != null && mAttachInfo.mScalingRequired;
      
                final Animation a = getAnimation();
      
                if (a != null) {
      
                    more = applyLegacyAnimation(parent, drawingTime, a, scalingRequired);
      
                    concatMatrix = a.willChangeTransformationMatrix();
      
                    if (concatMatrix) {
      
                        mPrivateFlags3 |= PFLAG3_VIEW_IS_ANIMATING_TRANSFORM;
      
                    }
      
                    transformToApply = parent.getChildTransformation();
      
                } else {
      
                    if ((mPrivateFlags3 & PFLAG3_VIEW_IS_ANIMATING_TRANSFORM) != 0) {
      
                        // No longer animating: clear out old animation matrix
      
                        mRenderNode.setAnimationMatrix(null);
      
                        mPrivateFlags3 &= ~PFLAG3_VIEW_IS_ANIMATING_TRANSFORM;
      
                    }
      
                    if (!drawingWithRenderNode
      
                            && (parentFlags & ViewGroup.FLAG_SUPPORT_STATIC_TRANSFORMATIONS) != 0) {
      
                        final Transformation t = parent.getChildTransformation();
      
                        final boolean hasTransform = parent.getChildStaticTransformation(this, t);
      
                        if (hasTransform) {
      
                            final int transformType = t.getTransformationType();
      
                            transformToApply = transformType != Transformation.TYPE_IDENTITY ? t : null;
      
                            concatMatrix = (transformType & Transformation.TYPE_MATRIX) != 0;
      
                        }
      
                    }
      
                }
      
                concatMatrix |= !childHasIdentityMatrix;
      
                // Sets the flag as early as possible to allow draw() implementations
      
                // to call invalidate() successfully when doing animations
      
                mPrivateFlags |= PFLAG_DRAWN;
      
                if (!concatMatrix &&
      
                        (parentFlags & (ViewGroup.FLAG_SUPPORT_STATIC_TRANSFORMATIONS |
      
                                ViewGroup.FLAG_CLIP_CHILDREN)) == ViewGroup.FLAG_CLIP_CHILDREN &&
      
                        canvas.quickReject(mLeft, mTop, mRight, mBottom, Canvas.EdgeType.BW) &&
      
                        (mPrivateFlags & PFLAG_DRAW_ANIMATION) == 0) {
      
                    mPrivateFlags2 |= PFLAG2_VIEW_QUICK_REJECTED;
      
                    return more;
      
                }
      
                mPrivateFlags2 &= ~PFLAG2_VIEW_QUICK_REJECTED;
      
                if (hardwareAcceleratedCanvas) {
      
                    // Clear INVALIDATED flag to allow invalidation to occur during rendering, but
      
                    // retain the flag's value temporarily in the mRecreateDisplayList flag
      
                    mRecreateDisplayList = (mPrivateFlags & PFLAG_INVALIDATED) != 0;
      
                    mPrivateFlags &= ~PFLAG_INVALIDATED;
      
                }
      
                RenderNode renderNode = null;
      
                Bitmap cache = null;
      
                int layerType = getLayerType(); // TODO: signify cache state with just 'cache' local
      
                if (layerType == LAYER_TYPE_SOFTWARE
      
                        || (!drawingWithRenderNode && layerType != LAYER_TYPE_NONE)) {
      
                    // If not drawing with RenderNode, treat HW layers as SW
      
                    layerType = LAYER_TYPE_SOFTWARE;
      
                    buildDrawingCache(true);
      
                    cache = getDrawingCache(true);
      
                }
      
                if (drawingWithRenderNode) {
      
                    // Delay getting the display list until animation-driven alpha values are
      
                    // set up and possibly passed on to the view
      
                    renderNode = updateDisplayListIfDirty();
      
                    if (!renderNode.isValid()) {
      
                        // Uncommon, but possible. If a view is removed from the hierarchy during the call
      
                        // to getDisplayList(), the display list will be marked invalid and we should not
      
                        // try to use it again.
      
                        renderNode = null;
      
                        drawingWithRenderNode = false;
      
                    }
      
                }
      
                int sx = 0;
      
                int sy = 0;
      
                if (!drawingWithRenderNode) {
      
                    computeScroll();
      
                    sx = mScrollX;
      
                    sy = mScrollY;
      
                }
      
                final boolean drawingWithDrawingCache = cache != null && !drawingWithRenderNode;
      
                final boolean offsetForScroll = cache == null && !drawingWithRenderNode;
      
                int restoreTo = -1;
      
                if (!drawingWithRenderNode || transformToApply != null) {
      
                    restoreTo = canvas.save();
      
                }
      
                if (offsetForScroll) {
      
                    canvas.translate(mLeft - sx, mTop - sy);
      
                } else {
      
                    if (!drawingWithRenderNode) {
      
                        canvas.translate(mLeft, mTop);
      
                    }
      
                    if (scalingRequired) {
      
                        if (drawingWithRenderNode) {
      
                            // TODO: Might not need this if we put everything inside the DL
      
                            restoreTo = canvas.save();
      
                        }
      
                        // mAttachInfo cannot be null, otherwise scalingRequired == false
      
                        final float scale = 1.0f / mAttachInfo.mApplicationScale;
      
                        canvas.scale(scale, scale);
      
                    }
      
                }
      
                float alpha = drawingWithRenderNode ? 1 : (getAlpha() * getTransitionAlpha());
      
                if (transformToApply != null
      
                        || alpha < 1
      
                        || !hasIdentityMatrix()
      
                        || (mPrivateFlags3 & PFLAG3_VIEW_IS_ANIMATING_ALPHA) != 0) {
      
                    if (transformToApply != null || !childHasIdentityMatrix) {
      
                        int transX = 0;
      
                        int transY = 0;
      
                        if (offsetForScroll) {
      
                            transX = -sx;
      
                            transY = -sy;
      
                        }
      
                        if (transformToApply != null) {
      
                            if (concatMatrix) {
      
                                if (drawingWithRenderNode) {
      
                                    renderNode.setAnimationMatrix(transformToApply.getMatrix());
      
                                } else {
      
                                    // Undo the scroll translation, apply the transformation matrix,
      
                                    // then redo the scroll translate to get the correct result.
      
                                    canvas.translate(-transX, -transY);
      
                                    canvas.concat(transformToApply.getMatrix());
      
                                    canvas.translate(transX, transY);
      
                                }
      
                                parent.mGroupFlags |= ViewGroup.FLAG_CLEAR_TRANSFORMATION;
      
                            }
      
                            float transformAlpha = transformToApply.getAlpha();
      
                            if (transformAlpha < 1) {
      
                                alpha *= transformAlpha;
      
                                parent.mGroupFlags |= ViewGroup.FLAG_CLEAR_TRANSFORMATION;
      
                            }
      
                        }
      
                        if (!childHasIdentityMatrix && !drawingWithRenderNode) {
      
                            canvas.translate(-transX, -transY);
      
                            canvas.concat(getMatrix());
      
                            canvas.translate(transX, transY);
      
                        }
      
                    }
      
                    // Deal with alpha if it is or used to be <1
      
                    if (alpha < 1 || (mPrivateFlags3 & PFLAG3_VIEW_IS_ANIMATING_ALPHA) != 0) {
      
                        if (alpha < 1) {
      
                            mPrivateFlags3 |= PFLAG3_VIEW_IS_ANIMATING_ALPHA;
      
                        } else {
      
                            mPrivateFlags3 &= ~PFLAG3_VIEW_IS_ANIMATING_ALPHA;
      
                        }
      
                        parent.mGroupFlags |= ViewGroup.FLAG_CLEAR_TRANSFORMATION;
      
                        if (!drawingWithDrawingCache) {
      
                            final int multipliedAlpha = (int) (255 * alpha);
      
                            if (!onSetAlpha(multipliedAlpha)) {
      
                                if (drawingWithRenderNode) {
      
                                    renderNode.setAlpha(alpha * getAlpha() * getTransitionAlpha());
      
                                } else if (layerType == LAYER_TYPE_NONE) {
      
                                    canvas.saveLayerAlpha(sx, sy, sx + getWidth(), sy + getHeight(),
      
                                            multipliedAlpha);
      
                                }
      
                            } else {
      
                                // Alpha is handled by the child directly, clobber the layer's alpha
      
                                mPrivateFlags |= PFLAG_ALPHA_SET;
      
                            }
      
                        }
      
                    }
      
                } else if ((mPrivateFlags & PFLAG_ALPHA_SET) == PFLAG_ALPHA_SET) {
      
                    onSetAlpha(255);
      
                    mPrivateFlags &= ~PFLAG_ALPHA_SET;
      
                }
      
                if (!drawingWithRenderNode) {
      
                    // apply clips directly, since RenderNode won't do it for this draw
      
                    if ((parentFlags & ViewGroup.FLAG_CLIP_CHILDREN) != 0 && cache == null) {
      
                        if (offsetForScroll) {
      
                            canvas.clipRect(sx, sy, sx + getWidth(), sy + getHeight());
      
                        } else {
      
                            if (!scalingRequired || cache == null) {
      
                                canvas.clipRect(0, 0, getWidth(), getHeight());
      
                            } else {
      
                                canvas.clipRect(0, 0, cache.getWidth(), cache.getHeight());
      
                            }
      
                        }
      
                    }
      
                    if (mClipBounds != null) {
      
                        // clip bounds ignore scroll
      
                        canvas.clipRect(mClipBounds);
      
                    }
      
                }
      
                if (!drawingWithDrawingCache) {
      
                    if (drawingWithRenderNode) {
      
                        mPrivateFlags &= ~PFLAG_DIRTY_MASK;
      
                        ((DisplayListCanvas) canvas).drawRenderNode(renderNode);
      
                    } else {
      
                        // Fast path for layouts with no backgrounds
      
                        if ((mPrivateFlags & PFLAG_SKIP_DRAW) == PFLAG_SKIP_DRAW) {
      
                            mPrivateFlags &= ~PFLAG_DIRTY_MASK;
      
                            dispatchDraw(canvas);
      
                        } else {
      
                            draw(canvas);
      
                        }
      
                    }
      
                } else if (cache != null) {
      
                    mPrivateFlags &= ~PFLAG_DIRTY_MASK;
      
                    if (layerType == LAYER_TYPE_NONE) {
      
                        // no layer paint, use temporary paint to draw bitmap
      
                        Paint cachePaint = parent.mCachePaint;
      
                        if (cachePaint == null) {
      
                            cachePaint = new Paint();
      
                            cachePaint.setDither(false);
      
                            parent.mCachePaint = cachePaint;
      
                        }
      
                        cachePaint.setAlpha((int) (alpha * 255));
      
                        canvas.drawBitmap(cache, 0.0f, 0.0f, cachePaint);
      
                    } else {
      
                        // use layer paint to draw the bitmap, merging the two alphas, but also restore
      
                        int layerPaintAlpha = mLayerPaint.getAlpha();
      
                        mLayerPaint.setAlpha((int) (alpha * layerPaintAlpha));
      
                        canvas.drawBitmap(cache, 0.0f, 0.0f, mLayerPaint);
      
                        mLayerPaint.setAlpha(layerPaintAlpha);
      
                    }
      
                }
      
                if (restoreTo >= 0) {
      
                    canvas.restoreToCount(restoreTo);
      
                }
      
                if (a != null && !more) {
      
                    if (!hardwareAcceleratedCanvas && !a.getFillAfter()) {
      
                        onSetAlpha(255);
      
                    }
      
                    parent.finishAnimatingView(this, a);
      
                }
      
                if (more && hardwareAcceleratedCanvas) {
      
                    if (a.hasAlpha() && (mPrivateFlags & PFLAG_ALPHA_SET) == PFLAG_ALPHA_SET) {
      
                        // alpha animations should cause the child to recreate its display list
      
                        invalidate(true);
      
                    }
      
                }
      
                mRecreateDisplayList = false;
      
                return more;
      
            }
      
            /**
      
             * Manually render this view (and all of its children) to the given Canvas.
      
             * The view must have already done a full layout before this function is
      
             * called.  When implementing a view, implement
      
             * {@link #onDraw(android.graphics.Canvas)} instead of overriding this method.
      
             * If you do need to override this method, call the superclass version.
      
             *
      
             * @param canvas The Canvas to which the View is rendered.
      
             */
      
            @CallSuper
      
            public void draw(Canvas canvas) {
      
                final int privateFlags = mPrivateFlags;
      
                final boolean dirtyOpaque = (privateFlags & PFLAG_DIRTY_MASK) == PFLAG_DIRTY_OPAQUE &&
      
                        (mAttachInfo == null || !mAttachInfo.mIgnoreDirtyState);
      
                mPrivateFlags = (privateFlags & ~PFLAG_DIRTY_MASK) | PFLAG_DRAWN;
      
                /*
      
                 * Draw traversal performs several drawing steps which must be executed
      
                 * in the appropriate order:
      
                 *
      
                 *      1. Draw the background
      
                 *      2. If necessary, save the canvas' layers to prepare for fading
      
                 *      3. Draw view's content
      
                 *      4. Draw children
      
                 *      5. If necessary, draw the fading edges and restore layers
      
                 *      6. Draw decorations (scrollbars for instance)
      
                 */
      
                // Step 1, draw the background, if needed
      
                int saveCount;
      
                if (!dirtyOpaque) {
      
                    drawBackground(canvas);
      
                }
      
                // skip step 2 & 5 if possible (common case)
      
                final int viewFlags = mViewFlags;
      
                boolean horizontalEdges = (viewFlags & FADING_EDGE_HORIZONTAL) != 0;
      
                boolean verticalEdges = (viewFlags & FADING_EDGE_VERTICAL) != 0;
      
                if (!verticalEdges && !horizontalEdges) {
      
                    // Step 3, draw the content
      
                    if (!dirtyOpaque) onDraw(canvas);
      
                    // Step 4, draw the children
      
                    dispatchDraw(canvas);
      
                    // Overlay is part of the content and draws beneath Foreground
      
                    if (mOverlay != null && !mOverlay.isEmpty()) {
      
                        mOverlay.getOverlayView().dispatchDraw(canvas);
      
                    }
      
                    // Step 6, draw decorations (foreground, scrollbars)
      
                    onDrawForeground(canvas);
      
                    // we're done...
      
                    return;
      
                }
      
                /*
      
                 * Here we do the full fledged routine...
      
                 * (this is an uncommon case where speed matters less,
      
                 * this is why we repeat some of the tests that have been
      
                 * done above)
      
                 */
      
                boolean drawTop = false;
      
                boolean drawBottom = false;
      
                boolean drawLeft = false;
      
                boolean drawRight = false;
      
                float topFadeStrength = 0.0f;
      
                float bottomFadeStrength = 0.0f;
      
                float leftFadeStrength = 0.0f;
      
                float rightFadeStrength = 0.0f;
      
                // Step 2, save the canvas' layers
      
                int paddingLeft = mPaddingLeft;
      
                final boolean offsetRequired = isPaddingOffsetRequired();
      
                if (offsetRequired) {
      
                    paddingLeft += getLeftPaddingOffset();
      
                }
      
                int left = mScrollX + paddingLeft;
      
                int right = left + mRight - mLeft - mPaddingRight - paddingLeft;
      
                int top = mScrollY + getFadeTop(offsetRequired);
      
                int bottom = top + getFadeHeight(offsetRequired);
      
                if (offsetRequired) {
      
                    right += getRightPaddingOffset();
      
                    bottom += getBottomPaddingOffset();
      
                }
      
                final ScrollabilityCache scrollabilityCache = mScrollCache;
      
                final float fadeHeight = scrollabilityCache.fadingEdgeLength;
      
                int length = (int) fadeHeight;
      
                // clip the fade length if top and bottom fades overlap
      
                // overlapping fades produce odd-looking artifacts
      
                if (verticalEdges && (top + length > bottom - length)) {
      
                    length = (bottom - top) / 2;
      
                }
      
                // also clip horizontal fades if necessary
      
                if (horizontalEdges && (left + length > right - length)) {
      
                    length = (right - left) / 2;
      
                }
      
                if (verticalEdges) {
      
                    topFadeStrength = Math.max(0.0f, Math.min(1.0f, getTopFadingEdgeStrength()));
      
                    drawTop = topFadeStrength * fadeHeight > 1.0f;
      
                    bottomFadeStrength = Math.max(0.0f, Math.min(1.0f, getBottomFadingEdgeStrength()));
      
                    drawBottom = bottomFadeStrength * fadeHeight > 1.0f;
      
                }
      
                if (horizontalEdges) {
      
                    leftFadeStrength = Math.max(0.0f, Math.min(1.0f, getLeftFadingEdgeStrength()));
      
                    drawLeft = leftFadeStrength * fadeHeight > 1.0f;
      
                    rightFadeStrength = Math.max(0.0f, Math.min(1.0f, getRightFadingEdgeStrength()));
      
                    drawRight = rightFadeStrength * fadeHeight > 1.0f;
      
                }
      
                saveCount = canvas.getSaveCount();
      
                int solidColor = getSolidColor();
      
                if (solidColor == 0) {
      
                    final int flags = Canvas.HAS_ALPHA_LAYER_SAVE_FLAG;
      
                    if (drawTop) {
      
                        canvas.saveLayer(left, top, right, top + length, null, flags);
      
                    }
      
                    if (drawBottom) {
      
                        canvas.saveLayer(left, bottom - length, right, bottom, null, flags);
      
                    }
      
                    if (drawLeft) {
      
                        canvas.saveLayer(left, top, left + length, bottom, null, flags);
      
                    }
      
                    if (drawRight) {
      
                        canvas.saveLayer(right - length, top, right, bottom, null, flags);
      
                    }
      
                } else {
      
                    scrollabilityCache.setFadeColor(solidColor);
      
                }
      
                // Step 3, draw the content
      
                if (!dirtyOpaque) onDraw(canvas);
      
                // Step 4, draw the children
      
                dispatchDraw(canvas);
      
                // Step 5, draw the fade effect and restore layers
      
                final Paint p = scrollabilityCache.paint;
      
                final Matrix matrix = scrollabilityCache.matrix;
      
                final Shader fade = scrollabilityCache.shader;
      
                if (drawTop) {
      
                    matrix.setScale(1, fadeHeight * topFadeStrength);
      
                    matrix.postTranslate(left, top);
      
                    fade.setLocalMatrix(matrix);
      
                    p.setShader(fade);
      
                    canvas.drawRect(left, top, right, top + length, p);
      
                }
      
                if (drawBottom) {
      
                    matrix.setScale(1, fadeHeight * bottomFadeStrength);
      
                    matrix.postRotate(180);
      
                    matrix.postTranslate(left, bottom);
      
                    fade.setLocalMatrix(matrix);
      
                    p.setShader(fade);
      
                    canvas.drawRect(left, bottom - length, right, bottom, p);
      
                }
      
                if (drawLeft) {
      
                    matrix.setScale(1, fadeHeight * leftFadeStrength);
      
                    matrix.postRotate(-90);
      
                    matrix.postTranslate(left, top);
      
                    fade.setLocalMatrix(matrix);
      
                    p.setShader(fade);
      
                    canvas.drawRect(left, top, left + length, bottom, p);
      
                }
      
                if (drawRight) {
      
                    matrix.setScale(1, fadeHeight * rightFadeStrength);
      
                    matrix.postRotate(90);
      
                    matrix.postTranslate(right, top);
      
                    fade.setLocalMatrix(matrix);
      
                    p.setShader(fade);
      
                    canvas.drawRect(right - length, top, right, bottom, p);
      
                }
      
                canvas.restoreToCount(saveCount);
      
                // Overlay is part of the content and draws beneath Foreground
      
                if (mOverlay != null && !mOverlay.isEmpty()) {
      
                    mOverlay.getOverlayView().dispatchDraw(canvas);
      
                }
      
                // Step 6, draw decorations (foreground, scrollbars)
      
                onDrawForeground(canvas);
      
            }
      
            /**
      
             * Draws the background onto the specified canvas.
      
             *
      
             * @param canvas Canvas on which to draw the background
      
             */
      
            private void drawBackground(Canvas canvas) {
      
                final Drawable background = mBackground;
      
                if (background == null) {
      
                    return;
      
                }
      
                setBackgroundBounds();
      
                // Attempt to use a display list if requested.
      
                if (canvas.isHardwareAccelerated() && mAttachInfo != null
      
                        && mAttachInfo.mHardwareRenderer != null) {
      
                    mBackgroundRenderNode = getDrawableRenderNode(background, mBackgroundRenderNode);
      
                    final RenderNode renderNode = mBackgroundRenderNode;
      
                    if (renderNode != null && renderNode.isValid()) {
      
                        setBackgroundRenderNodeProperties(renderNode);
      
                        ((DisplayListCanvas) canvas).drawRenderNode(renderNode);
      
                        return;
      
                    }
      
                }
      
                final int scrollX = mScrollX;
      
                final int scrollY = mScrollY;
      
                if ((scrollX | scrollY) == 0) {
      
                    background.draw(canvas);
      
                } else {
      
                    canvas.translate(scrollX, scrollY);
      
                    background.draw(canvas);
      
                    canvas.translate(-scrollX, -scrollY);
      
                }
      
            }
      
            /**
      
             * Sets the correct background bounds and rebuilds the outline, if needed.
      
             * <p/>
      
             * This is called by LayoutLib.
      
             */
      
            void setBackgroundBounds() {
      
                if (mBackgroundSizeChanged && mBackground != null) {
      
                    mBackground.setBounds(0, 0,  mRight - mLeft, mBottom - mTop);
      
                    mBackgroundSizeChanged = false;
      
                    rebuildOutline();
      
                }
      
            }
      
            private void setBackgroundRenderNodeProperties(RenderNode renderNode) {
      
                renderNode.setTranslationX(mScrollX);
      
                renderNode.setTranslationY(mScrollY);
      
            }
      
            /**
      
             * Creates a new display list or updates the existing display list for the
      
             * specified Drawable.
      
             *
      
             * @param drawable Drawable for which to create a display list
      
             * @param renderNode Existing RenderNode, or {@code null}
      
             * @return A valid display list for the specified drawable
      
             */
      
            private RenderNode getDrawableRenderNode(Drawable drawable, RenderNode renderNode) {
      
                if (renderNode == null) {
      
                    renderNode = RenderNode.create(drawable.getClass().getName(), this);
      
                }
      
                final Rect bounds = drawable.getBounds();
      
                final int width = bounds.width();
      
                final int height = bounds.height();
      
                final DisplayListCanvas canvas = renderNode.start(width, height);
      
                // Reverse left/top translation done by drawable canvas, which will
      
                // instead be applied by rendernode's LTRB bounds below. This way, the
      
                // drawable's bounds match with its rendernode bounds and its content
      
                // will lie within those bounds in the rendernode tree.
      
                canvas.translate(-bounds.left, -bounds.top);
      
                try {
      
                    drawable.draw(canvas);
      
                } finally {
      
                    renderNode.end(canvas);
      
                }
      
                // Set up drawable properties that are view-independent.
      
                renderNode.setLeftTopRightBottom(bounds.left, bounds.top, bounds.right, bounds.bottom);
      
                renderNode.setProjectBackwards(drawable.isProjected());
      
                renderNode.setProjectionReceiver(true);
      
                renderNode.setClipToBounds(false);
      
                return renderNode;
      
            }
      
            /**
      
             * Returns the overlay for this view, creating it if it does not yet exist.
      
             * Adding drawables to the overlay will cause them to be displayed whenever
      
             * the view itself is redrawn. Objects in the overlay should be actively
      
             * managed: remove them when they should not be displayed anymore. The
      
             * overlay will always have the same size as its host view.
      
             *
      
             * <p>Note: Overlays do not currently work correctly with {@link
      
             * SurfaceView} or {@link TextureView}; contents in overlays for these
      
             * types of views may not display correctly.</p>
      
             *
      
             * @return The ViewOverlay object for this view.
      
             * @see ViewOverlay
      
             */
      
            public ViewOverlay getOverlay() {
      
                if (mOverlay == null) {
      
                    mOverlay = new ViewOverlay(mContext, this);
      
                }
      
                return mOverlay;
      
            }
      
            /**
      
             * Override this if your view is known to always be drawn on top of a solid color background,
      
             * and needs to draw fading edges. Returning a non-zero color enables the view system to
      
             * optimize the drawing of the fading edges. If you do return a non-zero color, the alpha
      
             * should be set to 0xFF.
      
             *
      
             * @see #setVerticalFadingEdgeEnabled(boolean)
      
             * @see #setHorizontalFadingEdgeEnabled(boolean)
      
             *
      
             * @return The known solid color background for this view, or 0 if the color may vary
      
             */
      
            @ViewDebug.ExportedProperty(category = "drawing")
      
            @ColorInt
      
            public int getSolidColor() {
      
                return 0;
      
            }
      
            /**
      
             * Build a human readable string representation of the specified view flags.
      
             *
      
             * @param flags the view flags to convert to a string
      
             * @return a String representing the supplied flags
      
             */
      
            private static String printFlags(int flags) {
      
                String output = "";
      
                int numFlags = 0;
      
                if ((flags & FOCUSABLE_MASK) == FOCUSABLE) {
      
                    output += "TAKES_FOCUS";
      
                    numFlags++;
      
                }
      
                switch (flags & VISIBILITY_MASK) {
      
                case INVISIBLE:
      
                    if (numFlags > 0) {
      
                        output += " ";
      
                    }
      
                    output += "INVISIBLE";
      
                    // USELESS HERE numFlags++;
      
                    break;
      
                case GONE:
      
                    if (numFlags > 0) {
      
                        output += " ";
      
                    }
      
                    output += "GONE";
      
                    // USELESS HERE numFlags++;
      
                    break;
      
                default:
      
                    break;
      
                }
      
                return output;
      
            }
      
            /**
      
             * Build a human readable string representation of the specified private
      
             * view flags.
      
             *
      
             * @param privateFlags the private view flags to convert to a string
      
             * @return a String representing the supplied flags
      
             */
      
            private static String printPrivateFlags(int privateFlags) {
      
                String output = "";
      
                int numFlags = 0;
      
                if ((privateFlags & PFLAG_WANTS_FOCUS) == PFLAG_WANTS_FOCUS) {
      
                    output += "WANTS_FOCUS";
      
                    numFlags++;
      
                }
      
                if ((privateFlags & PFLAG_FOCUSED) == PFLAG_FOCUSED) {
      
                    if (numFlags > 0) {
      
                        output += " ";
      
                    }
      
                    output += "FOCUSED";
      
                    numFlags++;
      
                }
      
                if ((privateFlags & PFLAG_SELECTED) == PFLAG_SELECTED) {
      
                    if (numFlags > 0) {
      
                        output += " ";
      
                    }
      
                    output += "SELECTED";
      
                    numFlags++;
      
                }
      
                if ((privateFlags & PFLAG_IS_ROOT_NAMESPACE) == PFLAG_IS_ROOT_NAMESPACE) {
      
                    if (numFlags > 0) {
      
                        output += " ";
      
                    }
      
                    output += "IS_ROOT_NAMESPACE";
      
                    numFlags++;
      
                }
      
                if ((privateFlags & PFLAG_HAS_BOUNDS) == PFLAG_HAS_BOUNDS) {
      
                    if (numFlags > 0) {
      
                        output += " ";
      
                    }
      
                    output += "HAS_BOUNDS";
      
                    numFlags++;
      
                }
      
                if ((privateFlags & PFLAG_DRAWN) == PFLAG_DRAWN) {
      
                    if (numFlags > 0) {
      
                        output += " ";
      
                    }
      
                    output += "DRAWN";
      
                    // USELESS HERE numFlags++;
      
                }
      
                return output;
      
            }
      
            /**
      
             * <p>Indicates whether or not this view's layout will be requested during
      
             * the next hierarchy layout pass.</p>
      
             *
      
             * @return true if the layout will be forced during next layout pass
      
             */
      
            public boolean isLayoutRequested() {
      
                return (mPrivateFlags & PFLAG_FORCE_LAYOUT) == PFLAG_FORCE_LAYOUT;
      
            }
      
            /**
      
             * Return true if o is a ViewGroup that is laying out using optical bounds.
      
             * @hide
      
             */
      
            public static boolean isLayoutModeOptical(Object o) {
      
                return o instanceof ViewGroup && ((ViewGroup) o).isLayoutModeOptical();
      
            }
      
            private boolean setOpticalFrame(int left, int top, int right, int bottom) {
      
                Insets parentInsets = mParent instanceof View ?
      
                        ((View) mParent).getOpticalInsets() : Insets.NONE;
      
                Insets childInsets = getOpticalInsets();
      
                return setFrame(
      
                        left   + parentInsets.left - childInsets.left,
      
                        top    + parentInsets.top  - childInsets.top,
      
                        right  + parentInsets.left + childInsets.right,
      
                        bottom + parentInsets.top  + childInsets.bottom);
      
            }
      
            /**
      
             * Assign a size and position to a view and all of its
      
             * descendants
      
             *
      
             * <p>This is the second phase of the layout mechanism.
      
             * (The first is measuring). In this phase, each parent calls
      
             * layout on all of its children to position them.
      
             * This is typically done using the child measurements
      
             * that were stored in the measure pass().</p>
      
             *
      
             * <p>Derived classes should not override this method.
      
             * Derived classes with children should override
      
             * onLayout. In that method, they should
      
             * call layout on each of their children.</p>
      
             *
      
             * @param l Left position, relative to parent
      
             * @param t Top position, relative to parent
      
             * @param r Right position, relative to parent
      
             * @param b Bottom position, relative to parent
      
             */
      
            @SuppressWarnings({"unchecked"})
      
            public void layout(int l, int t, int r, int b) {
      
                if ((mPrivateFlags3 & PFLAG3_MEASURE_NEEDED_BEFORE_LAYOUT) != 0) {
      
                    onMeasure(mOldWidthMeasureSpec, mOldHeightMeasureSpec);
      
                    mPrivateFlags3 &= ~PFLAG3_MEASURE_NEEDED_BEFORE_LAYOUT;
      
                }
      
                int oldL = mLeft;
      
                int oldT = mTop;
      
                int oldB = mBottom;
      
                int oldR = mRight;
      
                boolean changed = isLayoutModeOptical(mParent) ?
      
                        setOpticalFrame(l, t, r, b) : setFrame(l, t, r, b);
      
                if (changed || (mPrivateFlags & PFLAG_LAYOUT_REQUIRED) == PFLAG_LAYOUT_REQUIRED) {
      
                    onLayout(changed, l, t, r, b);
      
                    mPrivateFlags &= ~PFLAG_LAYOUT_REQUIRED;
      
                    ListenerInfo li = mListenerInfo;
      
                    if (li != null && li.mOnLayoutChangeListeners != null) {
      
                        ArrayList<OnLayoutChangeListener> listenersCopy =
      
                                (ArrayList<OnLayoutChangeListener>)li.mOnLayoutChangeListeners.clone();
      
                        int numListeners = listenersCopy.size();
      
                        for (int i = 0; i < numListeners; ++i) {
      
                            listenersCopy.get(i).onLayoutChange(this, l, t, r, b, oldL, oldT, oldR, oldB);
      
                        }
      
                    }
      
                }
      
                mPrivateFlags &= ~PFLAG_FORCE_LAYOUT;
      
                mPrivateFlags3 |= PFLAG3_IS_LAID_OUT;
      
            }
      
            /**
      
             * Called from layout when this view should
      
             * assign a size and position to each of its children.
      
             *
      
             * Derived classes with children should override
      
             * this method and call layout on each of
      
             * their children.
      
             * @param changed This is a new size or position for this view
      
             * @param left Left position, relative to parent
      
             * @param top Top position, relative to parent
      
             * @param right Right position, relative to parent
      
             * @param bottom Bottom position, relative to parent
      
             */
      
            protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
      
            }
      
            /**
      
             * Assign a size and position to this view.
      
             *
      
             * This is called from layout.
      
             *
      
             * @param left Left position, relative to parent
      
             * @param top Top position, relative to parent
      
             * @param right Right position, relative to parent
      
             * @param bottom Bottom position, relative to parent
      
             * @return true if the new size and position are different than the
      
             *         previous ones
      
             * {@hide}
      
             */
      
            protected boolean setFrame(int left, int top, int right, int bottom) {
      
                boolean changed = false;
      
                if (DBG) {
      
                    Log.d("View", this + " View.setFrame(" + left + "," + top + ","
      
                            + right + "," + bottom + ")");
      
                }
      
                if (mLeft != left || mRight != right || mTop != top || mBottom != bottom) {
      
                    changed = true;
      
                    // Remember our drawn bit
      
                    int drawn = mPrivateFlags & PFLAG_DRAWN;
      
                    int oldWidth = mRight - mLeft;
      
                    int oldHeight = mBottom - mTop;
      
                    int newWidth = right - left;
      
                    int newHeight = bottom - top;
      
                    boolean sizeChanged = (newWidth != oldWidth) || (newHeight != oldHeight);
      
                    // Invalidate our old position
      
                    invalidate(sizeChanged);
      
                    mLeft = left;
      
                    mTop = top;
      
                    mRight = right;
      
                    mBottom = bottom;
      
                    mRenderNode.setLeftTopRightBottom(mLeft, mTop, mRight, mBottom);
      
                    mPrivateFlags |= PFLAG_HAS_BOUNDS;
      
                    if (sizeChanged) {
      
                        sizeChange(newWidth, newHeight, oldWidth, oldHeight);
      
                    }
      
                    if ((mViewFlags & VISIBILITY_MASK) == VISIBLE || mGhostView != null) {
      
                        // If we are visible, force the DRAWN bit to on so that
      
                        // this invalidate will go through (at least to our parent).
      
                        // This is because someone may have invalidated this view
      
                        // before this call to setFrame came in, thereby clearing
      
                        // the DRAWN bit.
      
                        mPrivateFlags |= PFLAG_DRAWN;
      
                        invalidate(sizeChanged);
      
                        // parent display list may need to be recreated based on a change in the bounds
      
                        // of any child
      
                        invalidateParentCaches();
      
                    }
      
                    // Reset drawn bit to original value (invalidate turns it off)
      
                    mPrivateFlags |= drawn;
      
                    mBackgroundSizeChanged = true;
      
                    if (mForegroundInfo != null) {
      
                        mForegroundInfo.mBoundsChanged = true;
      
                    }
      
                    notifySubtreeAccessibilityStateChangedIfNeeded();
      
                }
      
                return changed;
      
            }
      
            /**
      
             * Same as setFrame, but public and hidden. For use in {@link android.transition.ChangeBounds}.
      
             * @hide
      
             */
      
            public void setLeftTopRightBottom(int left, int top, int right, int bottom) {
      
                setFrame(left, top, right, bottom);
      
            }
      
            private void sizeChange(int newWidth, int newHeight, int oldWidth, int oldHeight) {
      
                onSizeChanged(newWidth, newHeight, oldWidth, oldHeight);
      
                if (mOverlay != null) {
      
                    mOverlay.getOverlayView().setRight(newWidth);
      
                    mOverlay.getOverlayView().setBottom(newHeight);
      
                }
      
                rebuildOutline();
      
            }
      
            /**
      
             * Finalize inflating a view from XML.  This is called as the last phase
      
             * of inflation, after all child views have been added.
      
             *
      
             * <p>Even if the subclass overrides onFinishInflate, they should always be
      
             * sure to call the super method, so that we get called.
      
             */
      
            @CallSuper
      
            protected void onFinishInflate() {
      
            }
      
            /**
      
             * Returns the resources associated with this view.
      
             *
      
             * @return Resources object.
      
             */
      
            public Resources getResources() {
      
                return mResources;
      
            }
      
            /**
      
             * Invalidates the specified Drawable.
      
             *
      
             * @param drawable the drawable to invalidate
      
             */
      
            @Override
      
            public void invalidateDrawable(@NonNull Drawable drawable) {
      
                if (verifyDrawable(drawable)) {
      
                    final Rect dirty = drawable.getDirtyBounds();
      
                    final int scrollX = mScrollX;
      
                    final int scrollY = mScrollY;
      
                    invalidate(dirty.left + scrollX, dirty.top + scrollY,
      
                            dirty.right + scrollX, dirty.bottom + scrollY);
      
                    rebuildOutline();
      
                }
      
            }
      
            /**
      
             * Schedules an action on a drawable to occur at a specified time.
      
             *
      
             * @param who the recipient of the action
      
             * @param what the action to run on the drawable
      
             * @param when the time at which the action must occur. Uses the
      
             *        {@link SystemClock#uptimeMillis} timebase.
      
             */
      
            @Override
      
            public void scheduleDrawable(Drawable who, Runnable what, long when) {
      
                if (verifyDrawable(who) && what != null) {
      
                    final long delay = when - SystemClock.uptimeMillis();
      
                    if (mAttachInfo != null) {
      
                        mAttachInfo.mViewRootImpl.mChoreographer.postCallbackDelayed(
      
                                Choreographer.CALLBACK_ANIMATION, what, who,
      
                                Choreographer.subtractFrameDelay(delay));
      
                    } else {
      
                        ViewRootImpl.getRunQueue().postDelayed(what, delay);
      
                    }
      
                }
      
            }
      
            /**
      
             * Cancels a scheduled action on a drawable.
      
             *
      
             * @param who the recipient of the action
      
             * @param what the action to cancel
      
             */
      
            @Override
      
            public void unscheduleDrawable(Drawable who, Runnable what) {
      
                if (verifyDrawable(who) && what != null) {
      
                    if (mAttachInfo != null) {
      
                        mAttachInfo.mViewRootImpl.mChoreographer.removeCallbacks(
      
                                Choreographer.CALLBACK_ANIMATION, what, who);
      
                    }
      
                    ViewRootImpl.getRunQueue().removeCallbacks(what);
      
                }
      
            }
      
            /**
      
             * Unschedule any events associated with the given Drawable.  This can be
      
             * used when selecting a new Drawable into a view, so that the previous
      
             * one is completely unscheduled.
      
             *
      
             * @param who The Drawable to unschedule.
      
             *
      
             * @see #drawableStateChanged
      
             */
      
            public void unscheduleDrawable(Drawable who) {
      
                if (mAttachInfo != null && who != null) {
      
                    mAttachInfo.mViewRootImpl.mChoreographer.removeCallbacks(
      
                            Choreographer.CALLBACK_ANIMATION, null, who);
      
                }
      
            }
      
            /**
      
             * Resolve the Drawables depending on the layout direction. This is implicitly supposing
      
             * that the View directionality can and will be resolved before its Drawables.
      
             *
      
             * Will call {@link View#onResolveDrawables} when resolution is done.
      
             *
      
             * @hide
      
             */
      
            protected void resolveDrawables() {
      
                // Drawables resolution may need to happen before resolving the layout direction (which is
      
                // done only during the measure() call).
      
                // If the layout direction is not resolved yet, we cannot resolve the Drawables except in
      
                // one case: when the raw layout direction has not been defined as LAYOUT_DIRECTION_INHERIT.
      
                // So, if the raw layout direction is LAYOUT_DIRECTION_LTR or LAYOUT_DIRECTION_RTL or
      
                // LAYOUT_DIRECTION_LOCALE, we can "cheat" and we don't need to wait for the layout
      
                // direction to be resolved as its resolved value will be the same as its raw value.
      
                if (!isLayoutDirectionResolved() &&
      
                        getRawLayoutDirection() == View.LAYOUT_DIRECTION_INHERIT) {
      
                    return;
      
                }
      
                final int layoutDirection = isLayoutDirectionResolved() ?
      
                        getLayoutDirection() : getRawLayoutDirection();
      
                if (mBackground != null) {
      
                    mBackground.setLayoutDirection(layoutDirection);
      
                }
      
                if (mForegroundInfo != null && mForegroundInfo.mDrawable != null) {
      
                    mForegroundInfo.mDrawable.setLayoutDirection(layoutDirection);
      
                }
      
                mPrivateFlags2 |= PFLAG2_DRAWABLE_RESOLVED;
      
                onResolveDrawables(layoutDirection);
      
            }
      
            boolean areDrawablesResolved() {
      
                return (mPrivateFlags2 & PFLAG2_DRAWABLE_RESOLVED) == PFLAG2_DRAWABLE_RESOLVED;
      
            }
      
            /**
      
             * Called when layout direction has been resolved.
      
             *
      
             * The default implementation does nothing.
      
             *
      
             * @param layoutDirection The resolved layout direction.
      
             *
      
             * @see #LAYOUT_DIRECTION_LTR
      
             * @see #LAYOUT_DIRECTION_RTL
      
             *
      
             * @hide
      
             */
      
            public void onResolveDrawables(@ResolvedLayoutDir int layoutDirection) {
      
            }
      
            /**
      
             * @hide
      
             */
      
            protected void resetResolvedDrawables() {
      
                resetResolvedDrawablesInternal();
      
            }
      
            void resetResolvedDrawablesInternal() {
      
                mPrivateFlags2 &= ~PFLAG2_DRAWABLE_RESOLVED;
      
            }
      
            /**
      
             * If your view subclass is displaying its own Drawable objects, it should
      
             * override this function and return true for any Drawable it is
      
             * displaying.  This allows animations for those drawables to be
      
             * scheduled.
      
             *
      
             * <p>Be sure to call through to the super class when overriding this
      
             * function.
      
             *
      
             * @param who The Drawable to verify.  Return true if it is one you are
      
             *            displaying, else return the result of calling through to the
      
             *            super class.
      
             *
      
             * @return boolean If true than the Drawable is being displayed in the
      
             *         view; else false and it is not allowed to animate.
      
             *
      
             * @see #unscheduleDrawable(android.graphics.drawable.Drawable)
      
             * @see #drawableStateChanged()
      
             */
      
            @CallSuper
      
            protected boolean verifyDrawable(Drawable who) {
      
                // Avoid verifying the scroll bar drawable so that we don't end up in
      
                // an invalidation loop. This effectively prevents the scroll bar
      
                // drawable from triggering invalidations and scheduling runnables.
      
                return who == mBackground || (mForegroundInfo != null && mForegroundInfo.mDrawable == who);
      
            }
      
            /**
      
             * This function is called whenever the state of the view changes in such
      
             * a way that it impacts the state of drawables being shown.
      
             * <p>
      
             * If the View has a StateListAnimator, it will also be called to run necessary state
      
             * change animations.
      
             * <p>
      
             * Be sure to call through to the superclass when overriding this function.
      
             *
      
             * @see Drawable#setState(int[])
      
             */
      
            @CallSuper
      
            protected void drawableStateChanged() {
      
                final int[] state = getDrawableState();
      
                final Drawable bg = mBackground;
      
                if (bg != null && bg.isStateful()) {
      
                    bg.setState(state);
      
                }
      
                final Drawable fg = mForegroundInfo != null ? mForegroundInfo.mDrawable : null;
      
                if (fg != null && fg.isStateful()) {
      
                    fg.setState(state);
      
                }
      
                if (mScrollCache != null) {
      
                    final Drawable scrollBar = mScrollCache.scrollBar;
      
                    if (scrollBar != null && scrollBar.isStateful()) {
      
                        scrollBar.setState(state);
      
                    }
      
                }
      
                if (mStateListAnimator != null) {
      
                    mStateListAnimator.setState(state);
      
                }
      
            }
      
            /**
      
             * This function is called whenever the view hotspot changes and needs to
      
             * be propagated to drawables or child views managed by the view.
      
             * <p>
      
             * Dispatching to child views is handled by
      
             * {@link #dispatchDrawableHotspotChanged(float, float)}.
      
             * <p>
      
             * Be sure to call through to the superclass when overriding this function.
      
             *
      
             * @param x hotspot x coordinate
      
             * @param y hotspot y coordinate
      
             */
      
            @CallSuper
      
            public void drawableHotspotChanged(float x, float y) {
      
                if (mBackground != null) {
      
                    mBackground.setHotspot(x, y);
      
                }
      
                if (mForegroundInfo != null && mForegroundInfo.mDrawable != null) {
      
                    mForegroundInfo.mDrawable.setHotspot(x, y);
      
                }
      
                dispatchDrawableHotspotChanged(x, y);
      
            }
      
            /**
      
             * Dispatches drawableHotspotChanged to all of this View's children.
      
             *
      
             * @param x hotspot x coordinate
      
             * @param y hotspot y coordinate
      
             * @see #drawableHotspotChanged(float, float)
      
             */
      
            public void dispatchDrawableHotspotChanged(float x, float y) {
      
            }
      
            /**
      
             * Call this to force a view to update its drawable state. This will cause
      
             * drawableStateChanged to be called on this view. Views that are interested
      
             * in the new state should call getDrawableState.
      
             *
      
             * @see #drawableStateChanged
      
             * @see #getDrawableState
      
             */
      
            public void refreshDrawableState() {
      
                mPrivateFlags |= PFLAG_DRAWABLE_STATE_DIRTY;
      
                drawableStateChanged();
      
                ViewParent parent = mParent;
      
                if (parent != null) {
      
                    parent.childDrawableStateChanged(this);
      
                }
      
            }
      
            /**
      
             * Return an array of resource IDs of the drawable states representing the
      
             * current state of the view.
      
             *
      
             * @return The current drawable state
      
             *
      
             * @see Drawable#setState(int[])
      
             * @see #drawableStateChanged()
      
             * @see #onCreateDrawableState(int)
      
             */
      
            public final int[] getDrawableState() {
      
                if ((mDrawableState != null) && ((mPrivateFlags & PFLAG_DRAWABLE_STATE_DIRTY) == 0)) {
      
                    return mDrawableState;
      
                } else {
      
                    mDrawableState = onCreateDrawableState(0);
      
                    mPrivateFlags &= ~PFLAG_DRAWABLE_STATE_DIRTY;
      
                    return mDrawableState;
      
                }
      
            }
      
            /**
      
             * Generate the new {@link android.graphics.drawable.Drawable} state for
      
             * this view. This is called by the view
      
             * system when the cached Drawable state is determined to be invalid.  To
      
             * retrieve the current state, you should use {@link #getDrawableState}.
      
             *
      
             * @param extraSpace if non-zero, this is the number of extra entries you
      
             * would like in the returned array in which you can place your own
      
             * states.
      
             *
      
             * @return Returns an array holding the current {@link Drawable} state of
      
             * the view.
      
             *
      
             * @see #mergeDrawableStates(int[], int[])
      
             */
      
            protected int[] onCreateDrawableState(int extraSpace) {
      
                if ((mViewFlags & DUPLICATE_PARENT_STATE) == DUPLICATE_PARENT_STATE &&
      
                        mParent instanceof View) {
      
                    return ((View) mParent).onCreateDrawableState(extraSpace);
      
                }
      
                int[] drawableState;
      
                int privateFlags = mPrivateFlags;
      
                int viewStateIndex = 0;
      
                if ((privateFlags & PFLAG_PRESSED) != 0) viewStateIndex |= StateSet.VIEW_STATE_PRESSED;
      
                if ((mViewFlags & ENABLED_MASK) == ENABLED) viewStateIndex |= StateSet.VIEW_STATE_ENABLED;
      
                if (isFocused()) viewStateIndex |= StateSet.VIEW_STATE_FOCUSED;
      
                if ((privateFlags & PFLAG_SELECTED) != 0) viewStateIndex |= StateSet.VIEW_STATE_SELECTED;
      
                if (hasWindowFocus()) viewStateIndex |= StateSet.VIEW_STATE_WINDOW_FOCUSED;
      
                if ((privateFlags & PFLAG_ACTIVATED) != 0) viewStateIndex |= StateSet.VIEW_STATE_ACTIVATED;
      
                if (mAttachInfo != null && mAttachInfo.mHardwareAccelerationRequested &&
      
                        HardwareRenderer.isAvailable()) {
      
                    // This is set if HW acceleration is requested, even if the current
      
                    // process doesn't allow it.  This is just to allow app preview
      
                    // windows to better match their app.
      
                    viewStateIndex |= StateSet.VIEW_STATE_ACCELERATED;
      
                }
      
                if ((privateFlags & PFLAG_HOVERED) != 0) viewStateIndex |= StateSet.VIEW_STATE_HOVERED;
      
                final int privateFlags2 = mPrivateFlags2;
      
                if ((privateFlags2 & PFLAG2_DRAG_CAN_ACCEPT) != 0) {
      
                    viewStateIndex |= StateSet.VIEW_STATE_DRAG_CAN_ACCEPT;
      
                }
      
                if ((privateFlags2 & PFLAG2_DRAG_HOVERED) != 0) {
      
                    viewStateIndex |= StateSet.VIEW_STATE_DRAG_HOVERED;
      
                }
      
                drawableState = StateSet.get(viewStateIndex);
      
                //noinspection ConstantIfStatement
      
                if (false) {
      
                    Log.i("View", "drawableStateIndex=" + viewStateIndex);
      
                    Log.i("View", toString()
      
                            + " pressed=" + ((privateFlags & PFLAG_PRESSED) != 0)
      
                            + " en=" + ((mViewFlags & ENABLED_MASK) == ENABLED)
      
                            + " fo=" + hasFocus()
      
                            + " sl=" + ((privateFlags & PFLAG_SELECTED) != 0)
      
                            + " wf=" + hasWindowFocus()
      
                            + ": " + Arrays.toString(drawableState));
      
                }
      
                if (extraSpace == 0) {
      
                    return drawableState;
      
                }
      
                final int[] fullState;
      
                if (drawableState != null) {
      
                    fullState = new int[drawableState.length + extraSpace];
      
                    System.arraycopy(drawableState, 0, fullState, 0, drawableState.length);
      
                } else {
      
                    fullState = new int[extraSpace];
      
                }
      
                return fullState;
      
            }
      
            /**
      
             * Merge your own state values in <var>additionalState</var> into the base
      
             * state values <var>baseState</var> that were returned by
      
             * {@link #onCreateDrawableState(int)}.
      
             *
      
             * @param baseState The base state values returned by
      
             * {@link #onCreateDrawableState(int)}, which will be modified to also hold your
      
             * own additional state values.
      
             *
      
             * @param additionalState The additional state values you would like
      
             * added to <var>baseState</var>; this array is not modified.
      
             *
      
             * @return As a convenience, the <var>baseState</var> array you originally
      
             * passed into the function is returned.
      
             *
      
             * @see #onCreateDrawableState(int)
      
             */
      
            protected static int[] mergeDrawableStates(int[] baseState, int[] additionalState) {
      
                final int N = baseState.length;
      
                int i = N - 1;
      
                while (i >= 0 && baseState[i] == 0) {
      
                    i--;
      
                }
      
                System.arraycopy(additionalState, 0, baseState, i + 1, additionalState.length);
      
                return baseState;
      
            }
      
            /**
      
             * Call {@link Drawable#jumpToCurrentState() Drawable.jumpToCurrentState()}
      
             * on all Drawable objects associated with this view.
      
             * <p>
      
             * Also calls {@link StateListAnimator#jumpToCurrentState()} if there is a StateListAnimator
      
             * attached to this view.
      
             */
      
            @CallSuper
      
            public void jumpDrawablesToCurrentState() {
      
                if (mBackground != null) {
      
                    mBackground.jumpToCurrentState();
      
                }
      
                if (mStateListAnimator != null) {
      
                    mStateListAnimator.jumpToCurrentState();
      
                }
      
                if (mForegroundInfo != null && mForegroundInfo.mDrawable != null) {
      
                    mForegroundInfo.mDrawable.jumpToCurrentState();
      
                }
      
            }
      
            /**
      
             * Sets the background color for this view.
      
             * @param color the color of the background
      
             */
      
            @RemotableViewMethod
      
            public void setBackgroundColor(@ColorInt int color) {
      
                if (mBackground instanceof ColorDrawable) {
      
                    ((ColorDrawable) mBackground.mutate()).setColor(color);
      
                    computeOpaqueFlags();
      
                    mBackgroundResource = 0;
      
                } else {
      
                    setBackground(new ColorDrawable(color));
      
                }
      
            }
      
            /**
      
             * Set the background to a given resource. The resource should refer to
      
             * a Drawable object or 0 to remove the background.
      
             * @param resid The identifier of the resource.
      
             *
      
             * @attr ref android.R.styleable#View_background
      
             */
      
            @RemotableViewMethod
      
            public void setBackgroundResource(@DrawableRes int resid) {
      
                if (resid != 0 && resid == mBackgroundResource) {
      
                    return;
      
                }
      
                Drawable d = null;
      
                if (resid != 0) {
      
                    d = mContext.getDrawable(resid);
      
                }
      
                setBackground(d);
      
                mBackgroundResource = resid;
      
            }
      
            /**
      
             * Set the background to a given Drawable, or remove the background. If the
      
             * background has padding, this View's padding is set to the background's
      
             * padding. However, when a background is removed, this View's padding isn't
      
             * touched. If setting the padding is desired, please use
      
             * {@link #setPadding(int, int, int, int)}.
      
             *
      
             * @param background The Drawable to use as the background, or null to remove the
      
             *        background
      
             */
      
            public void setBackground(Drawable background) {
      
                //noinspection deprecation
      
                setBackgroundDrawable(background);
      
            }
      
            /**
      
             * @deprecated use {@link #setBackground(Drawable)} instead
      
             */
      
            @Deprecated
      
            public void setBackgroundDrawable(Drawable background) {
      
                computeOpaqueFlags();
      
                if (background == mBackground) {
      
                    return;
      
                }
      
                boolean requestLayout = false;
      
                mBackgroundResource = 0;
      
                /*
      
                 * Regardless of whether we're setting a new background or not, we want
      
                 * to clear the previous drawable.
      
                 */
      
                if (mBackground != null) {
      
                    mBackground.setCallback(null);
      
                    unscheduleDrawable(mBackground);
      
                }
      
                if (background != null) {
      
                    Rect padding = sThreadLocal.get();
      
                    if (padding == null) {
      
                        padding = new Rect();
      
                        sThreadLocal.set(padding);
      
                    }
      
                    resetResolvedDrawablesInternal();
      
                    background.setLayoutDirection(getLayoutDirection());
      
                    if (background.getPadding(padding)) {
      
                        resetResolvedPaddingInternal();
      
                        switch (background.getLayoutDirection()) {
      
                            case LAYOUT_DIRECTION_RTL:
      
                                mUserPaddingLeftInitial = padding.right;
      
                                mUserPaddingRightInitial = padding.left;
      
                                internalSetPadding(padding.right, padding.top, padding.left, padding.bottom);
      
                                break;
      
                            case LAYOUT_DIRECTION_LTR:
      
                            default:
      
                                mUserPaddingLeftInitial = padding.left;
      
                                mUserPaddingRightInitial = padding.right;
      
                                internalSetPadding(padding.left, padding.top, padding.right, padding.bottom);
      
                        }
      
                        mLeftPaddingDefined = false;
      
                        mRightPaddingDefined = false;
      
                    }
      
                    // Compare the minimum sizes of the old Drawable and the new.  If there isn't an old or
      
                    // if it has a different minimum size, we should layout again
      
                    if (mBackground == null
      
                            || mBackground.getMinimumHeight() != background.getMinimumHeight()
      
                            || mBackground.getMinimumWidth() != background.getMinimumWidth()) {
      
                        requestLayout = true;
      
                    }
      
                    background.setCallback(this);
      
                    if (background.isStateful()) {
      
                        background.setState(getDrawableState());
      
                    }
      
                    background.setVisible(getVisibility() == VISIBLE, false);
      
                    mBackground = background;
      
                    applyBackgroundTint();
      
                    if ((mPrivateFlags & PFLAG_SKIP_DRAW) != 0) {
      
                        mPrivateFlags &= ~PFLAG_SKIP_DRAW;
      
                        requestLayout = true;
      
                    }
      
                } else {
      
                    /* Remove the background */
      
                    mBackground = null;
      
                    if ((mViewFlags & WILL_NOT_DRAW) != 0
      
                            && (mForegroundInfo == null || mForegroundInfo.mDrawable == null)) {
      
                        mPrivateFlags |= PFLAG_SKIP_DRAW;
      
                    }
      
                    /*
      
                     * When the background is set, we try to apply its padding to this
      
                     * View. When the background is removed, we don't touch this View's
      
                     * padding. This is noted in the Javadocs. Hence, we don't need to
      
                     * requestLayout(), the invalidate() below is sufficient.
      
                     */
      
                    // The old background's minimum size could have affected this
      
                    // View's layout, so let's requestLayout
      
                    requestLayout = true;
      
                }
      
                computeOpaqueFlags();
      
                if (requestLayout) {
      
                    requestLayout();
      
                }
      
                mBackgroundSizeChanged = true;
      
                invalidate(true);
      
            }
      
            /**
      
             * Gets the background drawable
      
             *
      
             * @return The drawable used as the background for this view, if any.
      
             *
      
             * @see #setBackground(Drawable)
      
             *
      
             * @attr ref android.R.styleable#View_background
      
             */
      
            public Drawable getBackground() {
      
                return mBackground;
      
            }
      
            /**
      
             * Applies a tint to the background drawable. Does not modify the current tint
      
             * mode, which is {@link PorterDuff.Mode#SRC_IN} by default.
      
             * <p>
      
             * Subsequent calls to {@link #setBackground(Drawable)} will automatically
      
             * mutate the drawable and apply the specified tint and tint mode using
      
             * {@link Drawable#setTintList(ColorStateList)}.
      
             *
      
             * @param tint the tint to apply, may be {@code null} to clear tint
      
             *
      
             * @attr ref android.R.styleable#View_backgroundTint
      
             * @see #getBackgroundTintList()
      
             * @see Drawable#setTintList(ColorStateList)
      
             */
      
            public void setBackgroundTintList(@Nullable ColorStateList tint) {
      
                if (mBackgroundTint == null) {
      
                    mBackgroundTint = new TintInfo();
      
                }
      
                mBackgroundTint.mTintList = tint;
      
                mBackgroundTint.mHasTintList = true;
      
                applyBackgroundTint();
      
            }
      
            /**
      
             * Return the tint applied to the background drawable, if specified.
      
             *
      
             * @return the tint applied to the background drawable
      
             * @attr ref android.R.styleable#View_backgroundTint
      
             * @see #setBackgroundTintList(ColorStateList)
      
             */
      
            @Nullable
      
            public ColorStateList getBackgroundTintList() {
      
                return mBackgroundTint != null ? mBackgroundTint.mTintList : null;
      
            }
      
            /**
      
             * Specifies the blending mode used to apply the tint specified by
      
             * {@link #setBackgroundTintList(ColorStateList)}} to the background
      
             * drawable. The default mode is {@link PorterDuff.Mode#SRC_IN}.
      
             *
      
             * @param tintMode the blending mode used to apply the tint, may be
      
             *                 {@code null} to clear tint
      
             * @attr ref android.R.styleable#View_backgroundTintMode
      
             * @see #getBackgroundTintMode()
      
             * @see Drawable#setTintMode(PorterDuff.Mode)
      
             */
      
            public void setBackgroundTintMode(@Nullable PorterDuff.Mode tintMode) {
      
                if (mBackgroundTint == null) {
      
                    mBackgroundTint = new TintInfo();
      
                }
      
                mBackgroundTint.mTintMode = tintMode;
      
                mBackgroundTint.mHasTintMode = true;
      
                applyBackgroundTint();
      
            }
      
            /**
      
             * Return the blending mode used to apply the tint to the background
      
             * drawable, if specified.
      
             *
      
             * @return the blending mode used to apply the tint to the background
      
             *         drawable
      
             * @attr ref android.R.styleable#View_backgroundTintMode
      
             * @see #setBackgroundTintMode(PorterDuff.Mode)
      
             */
      
            @Nullable
      
            public PorterDuff.Mode getBackgroundTintMode() {
      
                return mBackgroundTint != null ? mBackgroundTint.mTintMode : null;
      
            }
      
            private void applyBackgroundTint() {
      
                if (mBackground != null && mBackgroundTint != null) {
      
                    final TintInfo tintInfo = mBackgroundTint;
      
                    if (tintInfo.mHasTintList || tintInfo.mHasTintMode) {
      
                        mBackground = mBackground.mutate();
      
                        if (tintInfo.mHasTintList) {
      
                            mBackground.setTintList(tintInfo.mTintList);
      
                        }
      
                        if (tintInfo.mHasTintMode) {
      
                            mBackground.setTintMode(tintInfo.mTintMode);
      
                        }
      
                        // The drawable (or one of its children) may not have been
      
                        // stateful before applying the tint, so let's try again.
      
                        if (mBackground.isStateful()) {
      
                            mBackground.setState(getDrawableState());
      
                        }
      
                    }
      
                }
      
            }
      
            /**
      
             * Returns the drawable used as the foreground of this View. The
      
             * foreground drawable, if non-null, is always drawn on top of the view's content.
      
             *
      
             * @return a Drawable or null if no foreground was set
      
             *
      
             * @see #onDrawForeground(Canvas)
      
             */
      
            public Drawable getForeground() {
      
                return mForegroundInfo != null ? mForegroundInfo.mDrawable : null;
      
            }
      
            /**
      
             * Supply a Drawable that is to be rendered on top of all of the content in the view.
      
             *
      
             * @param foreground the Drawable to be drawn on top of the children
      
             *
      
             * @attr ref android.R.styleable#View_foreground
      
             */
      
            public void setForeground(Drawable foreground) {
      
                if (mForegroundInfo == null) {
      
                    if (foreground == null) {
      
                        // Nothing to do.
      
                        return;
      
                    }
      
                    mForegroundInfo = new ForegroundInfo();
      
                }
      
                if (foreground == mForegroundInfo.mDrawable) {
      
                    // Nothing to do
      
                    return;
      
                }
      
                if (mForegroundInfo.mDrawable != null) {
      
                    mForegroundInfo.mDrawable.setCallback(null);
      
                    unscheduleDrawable(mForegroundInfo.mDrawable);
      
                }
      
                mForegroundInfo.mDrawable = foreground;
      
                mForegroundInfo.mBoundsChanged = true;
      
                if (foreground != null) {
      
                    if ((mPrivateFlags & PFLAG_SKIP_DRAW) != 0) {
      
                        mPrivateFlags &= ~PFLAG_SKIP_DRAW;
      
                    }
      
                    foreground.setCallback(this);
      
                    foreground.setLayoutDirection(getLayoutDirection());
      
                    if (foreground.isStateful()) {
      
                        foreground.setState(getDrawableState());
      
                    }
      
                    applyForegroundTint();
      
                } else if ((mViewFlags & WILL_NOT_DRAW) != 0 && mBackground == null) {
      
                    mPrivateFlags |= PFLAG_SKIP_DRAW;
      
                }
      
                requestLayout();
      
                invalidate();
      
            }
      
            /**
      
             * Magic bit used to support features of framework-internal window decor implementation details.
      
             * This used to live exclusively in FrameLayout.
      
             *
      
             * @return true if the foreground should draw inside the padding region or false
      
             *         if it should draw inset by the view's padding
      
             * @hide internal use only; only used by FrameLayout and internal screen layouts.
      
             */
      
            public boolean isForegroundInsidePadding() {
      
                return mForegroundInfo != null ? mForegroundInfo.mInsidePadding : true;
      
            }
      
            /**
      
             * Describes how the foreground is positioned.
      
             *
      
             * @return foreground gravity.
      
             *
      
             * @see #setForegroundGravity(int)
      
             *
      
             * @attr ref android.R.styleable#View_foregroundGravity
      
             */
      
            public int getForegroundGravity() {
      
                return mForegroundInfo != null ? mForegroundInfo.mGravity
      
                        : Gravity.START | Gravity.TOP;
      
            }
      
            /**
      
             * Describes how the foreground is positioned. Defaults to START and TOP.
      
             *
      
             * @param gravity see {@link android.view.Gravity}
      
             *
      
             * @see #getForegroundGravity()
      
             *
      
             * @attr ref android.R.styleable#View_foregroundGravity
      
             */
      
            public void setForegroundGravity(int gravity) {
      
                if (mForegroundInfo == null) {
      
                    mForegroundInfo = new ForegroundInfo();
      
                }
      
                if (mForegroundInfo.mGravity != gravity) {
      
                    if ((gravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK) == 0) {
      
                        gravity |= Gravity.START;
      
                    }
      
                    if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == 0) {
      
                        gravity |= Gravity.TOP;
      
                    }
      
                    mForegroundInfo.mGravity = gravity;
      
                    requestLayout();
      
                }
      
            }
      
            /**
      
             * Applies a tint to the foreground drawable. Does not modify the current tint
      
             * mode, which is {@link PorterDuff.Mode#SRC_IN} by default.
      
             * <p>
      
             * Subsequent calls to {@link #setForeground(Drawable)} will automatically
      
             * mutate the drawable and apply the specified tint and tint mode using
      
             * {@link Drawable#setTintList(ColorStateList)}.
      
             *
      
             * @param tint the tint to apply, may be {@code null} to clear tint
      
             *
      
             * @attr ref android.R.styleable#View_foregroundTint
      
             * @see #getForegroundTintList()
      
             * @see Drawable#setTintList(ColorStateList)
      
             */
      
            public void setForegroundTintList(@Nullable ColorStateList tint) {
      
                if (mForegroundInfo == null) {
      
                    mForegroundInfo = new ForegroundInfo();
      
                }
      
                if (mForegroundInfo.mTintInfo == null) {
      
                    mForegroundInfo.mTintInfo = new TintInfo();
      
                }
      
                mForegroundInfo.mTintInfo.mTintList = tint;
      
                mForegroundInfo.mTintInfo.mHasTintList = true;
      
                applyForegroundTint();
      
            }
      
            /**
      
             * Return the tint applied to the foreground drawable, if specified.
      
             *
      
             * @return the tint applied to the foreground drawable
      
             * @attr ref android.R.styleable#View_foregroundTint
      
             * @see #setForegroundTintList(ColorStateList)
      
             */
      
            @Nullable
      
            public ColorStateList getForegroundTintList() {
      
                return mForegroundInfo != null && mForegroundInfo.mTintInfo != null
      
                        ? mForegroundInfo.mTintInfo.mTintList : null;
      
            }
      
            /**
      
             * Specifies the blending mode used to apply the tint specified by
      
             * {@link #setForegroundTintList(ColorStateList)}} to the background
      
             * drawable. The default mode is {@link PorterDuff.Mode#SRC_IN}.
      
             *
      
             * @param tintMode the blending mode used to apply the tint, may be
      
             *                 {@code null} to clear tint
      
             * @attr ref android.R.styleable#View_foregroundTintMode
      
             * @see #getForegroundTintMode()
      
             * @see Drawable#setTintMode(PorterDuff.Mode)
      
             */
      
            public void setForegroundTintMode(@Nullable PorterDuff.Mode tintMode) {
      
                if (mForegroundInfo == null) {
      
                    mForegroundInfo = new ForegroundInfo();
      
                }
      
                if (mForegroundInfo.mTintInfo == null) {
      
                    mForegroundInfo.mTintInfo = new TintInfo();
      
                }
      
                mForegroundInfo.mTintInfo.mTintMode = tintMode;
      
                mForegroundInfo.mTintInfo.mHasTintMode = true;
      
                applyForegroundTint();
      
            }
      
            /**
      
             * Return the blending mode used to apply the tint to the foreground
      
             * drawable, if specified.
      
             *
      
             * @return the blending mode used to apply the tint to the foreground
      
             *         drawable
      
             * @attr ref android.R.styleable#View_foregroundTintMode
      
             * @see #setForegroundTintMode(PorterDuff.Mode)
      
             */
      
            @Nullable
      
            public PorterDuff.Mode getForegroundTintMode() {
      
                return mForegroundInfo != null && mForegroundInfo.mTintInfo != null
      
                        ? mForegroundInfo.mTintInfo.mTintMode : null;
      
            }
      
            private void applyForegroundTint() {
      
                if (mForegroundInfo != null && mForegroundInfo.mDrawable != null
      
                        && mForegroundInfo.mTintInfo != null) {
      
                    final TintInfo tintInfo = mForegroundInfo.mTintInfo;
      
                    if (tintInfo.mHasTintList || tintInfo.mHasTintMode) {
      
                        mForegroundInfo.mDrawable = mForegroundInfo.mDrawable.mutate();
      
                        if (tintInfo.mHasTintList) {
      
                            mForegroundInfo.mDrawable.setTintList(tintInfo.mTintList);
      
                        }
      
                        if (tintInfo.mHasTintMode) {
      
                            mForegroundInfo.mDrawable.setTintMode(tintInfo.mTintMode);
      
                        }
      
                        // The drawable (or one of its children) may not have been
      
                        // stateful before applying the tint, so let's try again.
      
                        if (mForegroundInfo.mDrawable.isStateful()) {
      
                            mForegroundInfo.mDrawable.setState(getDrawableState());
      
                        }
      
                    }
      
                }
      
            }
      
            /**
      
             * Draw any foreground content for this view.
      
             *
      
             * <p>Foreground content may consist of scroll bars, a {@link #setForeground foreground}
      
             * drawable or other view-specific decorations. The foreground is drawn on top of the
      
             * primary view content.</p>
      
             *
      
             * @param canvas canvas to draw into
      
             */
      
            public void onDrawForeground(Canvas canvas) {
      
                onDrawScrollIndicators(canvas);
      
                onDrawScrollBars(canvas);
      
                final Drawable foreground = mForegroundInfo != null ? mForegroundInfo.mDrawable : null;
      
                if (foreground != null) {
      
                    if (mForegroundInfo.mBoundsChanged) {
      
                        mForegroundInfo.mBoundsChanged = false;
      
                        final Rect selfBounds = mForegroundInfo.mSelfBounds;
      
                        final Rect overlayBounds = mForegroundInfo.mOverlayBounds;
      
                        if (mForegroundInfo.mInsidePadding) {
      
                            selfBounds.set(0, 0, getWidth(), getHeight());
      
                        } else {
      
                            selfBounds.set(getPaddingLeft(), getPaddingTop(),
      
                                    getWidth() - getPaddingRight(), getHeight() - getPaddingBottom());
      
                        }
      
                        final int ld = getLayoutDirection();
      
                        Gravity.apply(mForegroundInfo.mGravity, foreground.getIntrinsicWidth(),
      
                                foreground.getIntrinsicHeight(), selfBounds, overlayBounds, ld);
      
                        foreground.setBounds(overlayBounds);
      
                    }
      
                    foreground.draw(canvas);
      
                }
      
            }
      
            /**
      
             * Sets the padding. The view may add on the space required to display
      
             * the scrollbars, depending on the style and visibility of the scrollbars.
      
             * So the values returned from {@link #getPaddingLeft}, {@link #getPaddingTop},
      
             * {@link #getPaddingRight} and {@link #getPaddingBottom} may be different
      
             * from the values set in this call.
      
             *
      
             * @attr ref android.R.styleable#View_padding
      
             * @attr ref android.R.styleable#View_paddingBottom
      
             * @attr ref android.R.styleable#View_paddingLeft
      
             * @attr ref android.R.styleable#View_paddingRight
      
             * @attr ref android.R.styleable#View_paddingTop
      
             * @param left the left padding in pixels
      
             * @param top the top padding in pixels
      
             * @param right the right padding in pixels
      
             * @param bottom the bottom padding in pixels
      
             */
      
            public void setPadding(int left, int top, int right, int bottom) {
      
                resetResolvedPaddingInternal();
      
                mUserPaddingStart = UNDEFINED_PADDING;
      
                mUserPaddingEnd = UNDEFINED_PADDING;
      
                mUserPaddingLeftInitial = left;
      
                mUserPaddingRightInitial = right;
      
                mLeftPaddingDefined = true;
      
                mRightPaddingDefined = true;
      
                internalSetPadding(left, top, right, bottom);
      
            }
      
            /**
      
             * @hide
      
             */
      
            protected void internalSetPadding(int left, int top, int right, int bottom) {
      
                mUserPaddingLeft = left;
      
                mUserPaddingRight = right;
      
                mUserPaddingBottom = bottom;
      
                final int viewFlags = mViewFlags;
      
                boolean changed = false;
      
                // Common case is there are no scroll bars.
      
                if ((viewFlags & (SCROLLBARS_VERTICAL|SCROLLBARS_HORIZONTAL)) != 0) {
      
                    if ((viewFlags & SCROLLBARS_VERTICAL) != 0) {
      
                        final int offset = (viewFlags & SCROLLBARS_INSET_MASK) == 0
      
                                ? 0 : getVerticalScrollbarWidth();
      
                        switch (mVerticalScrollbarPosition) {
      
                            case SCROLLBAR_POSITION_DEFAULT:
      
                                if (isLayoutRtl()) {
      
                                    left += offset;
      
                                } else {
      
                                    right += offset;
      
                                }
      
                                break;
      
                            case SCROLLBAR_POSITION_RIGHT:
      
                                right += offset;
      
                                break;
      
                            case SCROLLBAR_POSITION_LEFT:
      
                                left += offset;
      
                                break;
      
                        }
      
                    }
      
                    if ((viewFlags & SCROLLBARS_HORIZONTAL) != 0) {
      
                        bottom += (viewFlags & SCROLLBARS_INSET_MASK) == 0
      
                                ? 0 : getHorizontalScrollbarHeight();
      
                    }
      
                }
      
                if (mPaddingLeft != left) {
      
                    changed = true;
      
                    mPaddingLeft = left;
      
                }
      
                if (mPaddingTop != top) {
      
                    changed = true;
      
                    mPaddingTop = top;
      
                }
      
                if (mPaddingRight != right) {
      
                    changed = true;
      
                    mPaddingRight = right;
      
                }
      
                if (mPaddingBottom != bottom) {
      
                    changed = true;
      
                    mPaddingBottom = bottom;
      
                }
      
                if (changed) {
      
                    requestLayout();
      
                    invalidateOutline();
      
                }
      
            }
      
            /**
      
             * Sets the relative padding. The view may add on the space required to display
      
             * the scrollbars, depending on the style and visibility of the scrollbars.
      
             * So the values returned from {@link #getPaddingStart}, {@link #getPaddingTop},
      
             * {@link #getPaddingEnd} and {@link #getPaddingBottom} may be different
      
             * from the values set in this call.
      
             *
      
             * @attr ref android.R.styleable#View_padding
      
             * @attr ref android.R.styleable#View_paddingBottom
      
             * @attr ref android.R.styleable#View_paddingStart
      
             * @attr ref android.R.styleable#View_paddingEnd
      
             * @attr ref android.R.styleable#View_paddingTop
      
             * @param start the start padding in pixels
      
             * @param top the top padding in pixels
      
             * @param end the end padding in pixels
      
             * @param bottom the bottom padding in pixels
      
             */
      
            public void setPaddingRelative(int start, int top, int end, int bottom) {
      
                resetResolvedPaddingInternal();
      
                mUserPaddingStart = start;
      
                mUserPaddingEnd = end;
      
                mLeftPaddingDefined = true;
      
                mRightPaddingDefined = true;
      
                switch(getLayoutDirection()) {
      
                    case LAYOUT_DIRECTION_RTL:
      
                        mUserPaddingLeftInitial = end;
      
                        mUserPaddingRightInitial = start;
      
                        internalSetPadding(end, top, start, bottom);
      
                        break;
      
                    case LAYOUT_DIRECTION_LTR:
      
                    default:
      
                        mUserPaddingLeftInitial = start;
      
                        mUserPaddingRightInitial = end;
      
                        internalSetPadding(start, top, end, bottom);
      
                }
      
            }
      
            /**
      
             * Returns the top padding of this view.
      
             *
      
             * @return the top padding in pixels
      
             */
      
            public int getPaddingTop() {
      
                return mPaddingTop;
      
            }
      
            /**
      
             * Returns the bottom padding of this view. If there are inset and enabled
      
             * scrollbars, this value may include the space required to display the
      
             * scrollbars as well.
      
             *
      
             * @return the bottom padding in pixels
      
             */
      
            public int getPaddingBottom() {
      
                return mPaddingBottom;
      
            }
      
            /**
      
             * Returns the left padding of this view. If there are inset and enabled
      
             * scrollbars, this value may include the space required to display the
      
             * scrollbars as well.
      
             *
      
             * @return the left padding in pixels
      
             */
      
            public int getPaddingLeft() {
      
                if (!isPaddingResolved()) {
      
                    resolvePadding();
      
                }
      
                return mPaddingLeft;
      
            }
      
            /**
      
             * Returns the start padding of this view depending on its resolved layout direction.
      
             * If there are inset and enabled scrollbars, this value may include the space
      
             * required to display the scrollbars as well.
      
             *
      
             * @return the start padding in pixels
      
             */
      
            public int getPaddingStart() {
      
                if (!isPaddingResolved()) {
      
                    resolvePadding();
      
                }
      
                return (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
      
                        mPaddingRight : mPaddingLeft;
      
            }
      
            /**
      
             * Returns the right padding of this view. If there are inset and enabled
      
             * scrollbars, this value may include the space required to display the
      
             * scrollbars as well.
      
             *
      
             * @return the right padding in pixels
      
             */
      
            public int getPaddingRight() {
      
                if (!isPaddingResolved()) {
      
                    resolvePadding();
      
                }
      
                return mPaddingRight;
      
            }
      
            /**
      
             * Returns the end padding of this view depending on its resolved layout direction.
      
             * If there are inset and enabled scrollbars, this value may include the space
      
             * required to display the scrollbars as well.
      
             *
      
             * @return the end padding in pixels
      
             */
      
            public int getPaddingEnd() {
      
                if (!isPaddingResolved()) {
      
                    resolvePadding();
      
                }
      
                return (getLayoutDirection() == LAYOUT_DIRECTION_RTL) ?
      
                        mPaddingLeft : mPaddingRight;
      
            }
      
            /**
      
             * Return if the padding has been set through relative values
      
             * {@link #setPaddingRelative(int, int, int, int)} or through
      
             * @attr ref android.R.styleable#View_paddingStart or
      
             * @attr ref android.R.styleable#View_paddingEnd
      
             *
      
             * @return true if the padding is relative or false if it is not.
      
             */
      
            public boolean isPaddingRelative() {
      
                return (mUserPaddingStart != UNDEFINED_PADDING || mUserPaddingEnd != UNDEFINED_PADDING);
      
            }
      
            Insets computeOpticalInsets() {
      
                return (mBackground == null) ? Insets.NONE : mBackground.getOpticalInsets();
      
            }
      
            /**
      
             * @hide
      
             */
      
            public void resetPaddingToInitialValues() {
      
                if (isRtlCompatibilityMode()) {
      
                    mPaddingLeft = mUserPaddingLeftInitial;
      
                    mPaddingRight = mUserPaddingRightInitial;
      
                    return;
      
                }
      
                if (isLayoutRtl()) {
      
                    mPaddingLeft = (mUserPaddingEnd >= 0) ? mUserPaddingEnd : mUserPaddingLeftInitial;
      
                    mPaddingRight = (mUserPaddingStart >= 0) ? mUserPaddingStart : mUserPaddingRightInitial;
      
                } else {
      
                    mPaddingLeft = (mUserPaddingStart >= 0) ? mUserPaddingStart : mUserPaddingLeftInitial;
      
                    mPaddingRight = (mUserPaddingEnd >= 0) ? mUserPaddingEnd : mUserPaddingRightInitial;
      
                }
      
            }
      
            /**
      
             * @hide
      
             */
      
            public Insets getOpticalInsets() {
      
                if (mLayoutInsets == null) {
      
                    mLayoutInsets = computeOpticalInsets();
      
                }
      
                return mLayoutInsets;
      
            }
      
            /**
      
             * Set this view's optical insets.
      
             *
      
             * <p>This method should be treated similarly to setMeasuredDimension and not as a general
      
             * property. Views that compute their own optical insets should call it as part of measurement.
      
             * This method does not request layout. If you are setting optical insets outside of
      
             * measure/layout itself you will want to call requestLayout() yourself.
      
             * </p>
      
             * @hide
      
             */
      
            public void setOpticalInsets(Insets insets) {
      
                mLayoutInsets = insets;
      
            }
      
            /**
      
             * Changes the selection state of this view. A view can be selected or not.
      
             * Note that selection is not the same as focus. Views are typically
      
             * selected in the context of an AdapterView like ListView or GridView;
      
             * the selected view is the view that is highlighted.
      
             *
      
             * @param selected true if the view must be selected, false otherwise
      
             */
      
            public void setSelected(boolean selected) {
      
                //noinspection DoubleNegation
      
                if (((mPrivateFlags & PFLAG_SELECTED) != 0) != selected) {
      
                    mPrivateFlags = (mPrivateFlags & ~PFLAG_SELECTED) | (selected ? PFLAG_SELECTED : 0);
      
                    if (!selected) resetPressedState();
      
                    invalidate(true);
      
                    refreshDrawableState();
      
                    dispatchSetSelected(selected);
      
                    if (selected) {
      
                        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_SELECTED);
      
                    } else {
      
                        notifyViewAccessibilityStateChangedIfNeeded(
      
                                AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
      
                    }
      
                }
      
            }
      
            /**
      
             * Dispatch setSelected to all of this View's children.
      
             *
      
             * @see #setSelected(boolean)
      
             *
      
             * @param selected The new selected state
      
             */
      
            protected void dispatchSetSelected(boolean selected) {
      
            }
      
            /**
      
             * Indicates the selection state of this view.
      
             *
      
             * @return true if the view is selected, false otherwise
      
             */
      
            @ViewDebug.ExportedProperty
      
            public boolean isSelected() {
      
                return (mPrivateFlags & PFLAG_SELECTED) != 0;
      
            }
      
            /**
      
             * Changes the activated state of this view. A view can be activated or not.
      
             * Note that activation is not the same as selection.  Selection is
      
             * a transient property, representing the view (hierarchy) the user is
      
             * currently interacting with.  Activation is a longer-term state that the
      
             * user can move views in and out of.  For example, in a list view with
      
             * single or multiple selection enabled, the views in the current selection
      
             * set are activated.  (Um, yeah, we are deeply sorry about the terminology
      
             * here.)  The activated state is propagated down to children of the view it
      
             * is set on.
      
             *
      
             * @param activated true if the view must be activated, false otherwise
      
             */
      
            public void setActivated(boolean activated) {
      
                //noinspection DoubleNegation
      
                if (((mPrivateFlags & PFLAG_ACTIVATED) != 0) != activated) {
      
                    mPrivateFlags = (mPrivateFlags & ~PFLAG_ACTIVATED) | (activated ? PFLAG_ACTIVATED : 0);
      
                    invalidate(true);
      
                    refreshDrawableState();
      
                    dispatchSetActivated(activated);
      
                }
      
            }
      
            /**
      
             * Dispatch setActivated to all of this View's children.
      
             *
      
             * @see #setActivated(boolean)
      
             *
      
             * @param activated The new activated state
      
             */
      
            protected void dispatchSetActivated(boolean activated) {
      
            }
      
            /**
      
             * Indicates the activation state of this view.
      
             *
      
             * @return true if the view is activated, false otherwise
      
             */
      
            @ViewDebug.ExportedProperty
      
            public boolean isActivated() {
      
                return (mPrivateFlags & PFLAG_ACTIVATED) != 0;
      
            }
      
            /**
      
             * Returns the ViewTreeObserver for this view's hierarchy. The view tree
      
             * observer can be used to get notifications when global events, like
      
             * layout, happen.
      
             *
      
             * The returned ViewTreeObserver observer is not guaranteed to remain
      
             * valid for the lifetime of this View. If the caller of this method keeps
      
             * a long-lived reference to ViewTreeObserver, it should always check for
      
             * the return value of {@link ViewTreeObserver#isAlive()}.
      
             *
      
             * @return The ViewTreeObserver for this view's hierarchy.
      
             */
      
            public ViewTreeObserver getViewTreeObserver() {
      
                if (mAttachInfo != null) {
      
                    return mAttachInfo.mTreeObserver;
      
                }
      
                if (mFloatingTreeObserver == null) {
      
                    mFloatingTreeObserver = new ViewTreeObserver();
      
                }
      
                return mFloatingTreeObserver;
      
            }
      
            /**
      
             * <p>Finds the topmost view in the current view hierarchy.</p>
      
             *
      
             * @return the topmost view containing this view
      
             */
      
            public View getRootView() {
      
                if (mAttachInfo != null) {
      
                    final View v = mAttachInfo.mRootView;
      
                    if (v != null) {
      
                        return v;
      
                    }
      
                }
      
                View parent = this;
      
                while (parent.mParent != null && parent.mParent instanceof View) {
      
                    parent = (View) parent.mParent;
      
                }
      
                return parent;
      
            }
      
            /**
      
             * Transforms a motion event from view-local coordinates to on-screen
      
             * coordinates.
      
             *
      
             * @param ev the view-local motion event
      
             * @return false if the transformation could not be applied
      
             * @hide
      
             */
      
            public boolean toGlobalMotionEvent(MotionEvent ev) {
      
                final AttachInfo info = mAttachInfo;
      
                if (info == null) {
      
                    return false;
      
                }
      
                final Matrix m = info.mTmpMatrix;
      
                m.set(Matrix.IDENTITY_MATRIX);
      
                transformMatrixToGlobal(m);
      
                ev.transform(m);
      
                return true;
      
            }
      
            /**
      
             * Transforms a motion event from on-screen coordinates to view-local
      
             * coordinates.
      
             *
      
             * @param ev the on-screen motion event
      
             * @return false if the transformation could not be applied
      
             * @hide
      
             */
      
            public boolean toLocalMotionEvent(MotionEvent ev) {
      
                final AttachInfo info = mAttachInfo;
      
                if (info == null) {
      
                    return false;
      
                }
      
                final Matrix m = info.mTmpMatrix;
      
                m.set(Matrix.IDENTITY_MATRIX);
      
                transformMatrixToLocal(m);
      
                ev.transform(m);
      
                return true;
      
            }
      
            /**
      
             * Modifies the input matrix such that it maps view-local coordinates to
      
             * on-screen coordinates.
      
             *
      
             * @param m input matrix to modify
      
             * @hide
      
             */
      
            public void transformMatrixToGlobal(Matrix m) {
      
                final ViewParent parent = mParent;
      
                if (parent instanceof View) {
      
                    final View vp = (View) parent;
      
                    vp.transformMatrixToGlobal(m);
      
                    m.preTranslate(-vp.mScrollX, -vp.mScrollY);
      
                } else if (parent instanceof ViewRootImpl) {
      
                    final ViewRootImpl vr = (ViewRootImpl) parent;
      
                    vr.transformMatrixToGlobal(m);
      
                    m.preTranslate(0, -vr.mCurScrollY);
      
                }
      
                m.preTranslate(mLeft, mTop);
      
                if (!hasIdentityMatrix()) {
      
                    m.preConcat(getMatrix());
      
                }
      
            }
      
            /**
      
             * Modifies the input matrix such that it maps on-screen coordinates to
      
             * view-local coordinates.
      
             *
      
             * @param m input matrix to modify
      
             * @hide
      
             */
      
            public void transformMatrixToLocal(Matrix m) {
      
                final ViewParent parent = mParent;
      
                if (parent instanceof View) {
      
                    final View vp = (View) parent;
      
                    vp.transformMatrixToLocal(m);
      
                    m.postTranslate(vp.mScrollX, vp.mScrollY);
      
                } else if (parent instanceof ViewRootImpl) {
      
                    final ViewRootImpl vr = (ViewRootImpl) parent;
      
                    vr.transformMatrixToLocal(m);
      
                    m.postTranslate(0, vr.mCurScrollY);
      
                }
      
                m.postTranslate(-mLeft, -mTop);
      
                if (!hasIdentityMatrix()) {
      
                    m.postConcat(getInverseMatrix());
      
                }
      
            }
      
            /**
      
             * @hide
      
             */
      
            @ViewDebug.ExportedProperty(category = "layout", indexMapping = {
      
                    @ViewDebug.IntToString(from = 0, to = "x"),
      
                    @ViewDebug.IntToString(from = 1, to = "y")
      
            })
      
            public int[] getLocationOnScreen() {
      
                int[] location = new int[2];
      
                getLocationOnScreen(location);
      
                return location;
      
            }
      
            /**
      
             * <p>Computes the coordinates of this view on the screen. The argument
      
             * must be an array of two integers. After the method returns, the array
      
             * contains the x and y location in that order.</p>
      
             *
      
             * @param location an array of two integers in which to hold the coordinates
      
             */
      
            public void getLocationOnScreen(@Size(2) int[] location) {
      
                getLocationInWindow(location);
      
                final AttachInfo info = mAttachInfo;
      
                if (info != null) {
      
                    location[0] += info.mWindowLeft;
      
                    location[1] += info.mWindowTop;
      
                }
      
            }
      
            /**
      
             * <p>Computes the coordinates of this view in its window. The argument
      
             * must be an array of two integers. After the method returns, the array
      
             * contains the x and y location in that order.</p>
      
             *
      
             * @param location an array of two integers in which to hold the coordinates
      
             */
      
            public void getLocationInWindow(@Size(2) int[] location) {
      
                if (location == null || location.length < 2) {
      
                    throw new IllegalArgumentException("location must be an array of two integers");
      
                }
      
                if (mAttachInfo == null) {
      
                    // When the view is not attached to a window, this method does not make sense
      
                    location[0] = location[1] = 0;
      
                    return;
      
                }
      
                float[] position = mAttachInfo.mTmpTransformLocation;
      
                position[0] = position[1] = 0.0f;
      
                if (!hasIdentityMatrix()) {
      
                    getMatrix().mapPoints(position);
      
                }
      
                position[0] += mLeft;
      
                position[1] += mTop;
      
                ViewParent viewParent = mParent;
      
                while (viewParent instanceof View) {
      
                    final View view = (View) viewParent;
      
                    position[0] -= view.mScrollX;
      
                    position[1] -= view.mScrollY;
      
                    if (!view.hasIdentityMatrix()) {
      
                        view.getMatrix().mapPoints(position);
      
                    }
      
                    position[0] += view.mLeft;
      
                    position[1] += view.mTop;
      
                    viewParent = view.mParent;
      
                 }
      
                if (viewParent instanceof ViewRootImpl) {
      
                    // *cough*
      
                    final ViewRootImpl vr = (ViewRootImpl) viewParent;
      
                    position[1] -= vr.mCurScrollY;
      
                }
      
                location[0] = (int) (position[0] + 0.5f);
      
                location[1] = (int) (position[1] + 0.5f);
      
            }
      
            /**
      
             * {@hide}
      
             * @param id the id of the view to be found
      
             * @return the view of the specified id, null if cannot be found
      
             */
      
            protected View findViewTraversal(@IdRes int id) {
      
                if (id == mID) {
      
                    return this;
      
                }
      
                return null;
      
            }
      
            /**
      
             * {@hide}
      
             * @param tag the tag of the view to be found
      
             * @return the view of specified tag, null if cannot be found
      
             */
      
            protected View findViewWithTagTraversal(Object tag) {
      
                if (tag != null && tag.equals(mTag)) {
      
                    return this;
      
                }
      
                return null;
      
            }
      
            /**
      
             * {@hide}
      
             * @param predicate The predicate to evaluate.
      
             * @param childToSkip If not null, ignores this child during the recursive traversal.
      
             * @return The first view that matches the predicate or null.
      
             */
      
            protected View findViewByPredicateTraversal(Predicate<View> predicate, View childToSkip) {
      
                if (predicate.apply(this)) {
      
                    return this;
      
                }
      
                return null;
      
            }
      
            /**
      
             * Look for a child view with the given id.  If this view has the given
      
             * id, return this view.
      
             *
      
             * @param id The id to search for.
      
             * @return The view that has the given id in the hierarchy or null
      
             */
      
            @Nullable
      
            public final View findViewById(@IdRes int id) {
      
                if (id < 0) {
      
                    return null;
      
                }
      
                return findViewTraversal(id);
      
            }
      
            /**
      
             * Finds a view by its unuque and stable accessibility id.
      
             *
      
             * @param accessibilityId The searched accessibility id.
      
             * @return The found view.
      
             */
      
            final View findViewByAccessibilityId(int accessibilityId) {
      
                if (accessibilityId < 0) {
      
                    return null;
      
                }
      
                View view = findViewByAccessibilityIdTraversal(accessibilityId);
      
                if (view != null) {
      
                    return view.includeForAccessibility() ? view : null;
      
                }
      
                return null;
      
            }
      
            /**
      
             * Performs the traversal to find a view by its unuque and stable accessibility id.
      
             *
      
             * <strong>Note:</strong>This method does not stop at the root namespace
      
             * boundary since the user can touch the screen at an arbitrary location
      
             * potentially crossing the root namespace bounday which will send an
      
             * accessibility event to accessibility services and they should be able
      
             * to obtain the event source. Also accessibility ids are guaranteed to be
      
             * unique in the window.
      
             *
      
             * @param accessibilityId The accessibility id.
      
             * @return The found view.
      
             *
      
             * @hide
      
             */
      
            public View findViewByAccessibilityIdTraversal(int accessibilityId) {
      
                if (getAccessibilityViewId() == accessibilityId) {
      
                    return this;
      
                }
      
                return null;
      
            }
      
            /**
      
             * Look for a child view with the given tag.  If this view has the given
      
             * tag, return this view.
      
             *
      
             * @param tag The tag to search for, using "tag.equals(getTag())".
      
             * @return The View that has the given tag in the hierarchy or null
      
             */
      
            public final View findViewWithTag(Object tag) {
      
                if (tag == null) {
      
                    return null;
      
                }
      
                return findViewWithTagTraversal(tag);
      
            }
      
            /**
      
             * {@hide}
      
             * Look for a child view that matches the specified predicate.
      
             * If this view matches the predicate, return this view.
      
             *
      
             * @param predicate The predicate to evaluate.
      
             * @return The first view that matches the predicate or null.
      
             */
      
            public final View findViewByPredicate(Predicate<View> predicate) {
      
                return findViewByPredicateTraversal(predicate, null);
      
            }
      
            /**
      
             * {@hide}
      
             * Look for a child view that matches the specified predicate,
      
             * starting with the specified view and its descendents and then
      
             * recusively searching the ancestors and siblings of that view
      
             * until this view is reached.
      
             *
      
             * This method is useful in cases where the predicate does not match
      
             * a single unique view (perhaps multiple views use the same id)
      
             * and we are trying to find the view that is "closest" in scope to the
      
             * starting view.
      
             *
      
             * @param start The view to start from.
      
             * @param predicate The predicate to evaluate.
      
             * @return The first view that matches the predicate or null.
      
             */
      
            public final View findViewByPredicateInsideOut(View start, Predicate<View> predicate) {
      
                View childToSkip = null;
      
                for (;;) {
      
                    View view = start.findViewByPredicateTraversal(predicate, childToSkip);
      
                    if (view != null || start == this) {
      
                        return view;
      
                    }
      
                    ViewParent parent = start.getParent();
      
                    if (parent == null || !(parent instanceof View)) {
      
                        return null;
      
                    }
      
                    childToSkip = start;
      
                    start = (View) parent;
      
                }
      
            }
      
            /**
      
             * Sets the identifier for this view. The identifier does not have to be
      
             * unique in this view's hierarchy. The identifier should be a positive
      
             * number.
      
             *
      
             * @see #NO_ID
      
             * @see #getId()
      
             * @see #findViewById(int)
      
             *
      
             * @param id a number used to identify the view
      
             *
      
             * @attr ref android.R.styleable#View_id
      
             */
      
            public void setId(@IdRes int id) {
      
                mID = id;
      
                if (mID == View.NO_ID && mLabelForId != View.NO_ID) {
      
                    mID = generateViewId();
      
                }
      
            }
      
            /**
      
             * {@hide}
      
             *
      
             * @param isRoot true if the view belongs to the root namespace, false
      
             *        otherwise
      
             */
      
            public void setIsRootNamespace(boolean isRoot) {
      
                if (isRoot) {
      
                    mPrivateFlags |= PFLAG_IS_ROOT_NAMESPACE;
      
                } else {
      
                    mPrivateFlags &= ~PFLAG_IS_ROOT_NAMESPACE;
      
                }
      
            }
      
            /**
      
             * {@hide}
      
             *
      
             * @return true if the view belongs to the root namespace, false otherwise
      
             */
      
            public boolean isRootNamespace() {
      
                return (mPrivateFlags&PFLAG_IS_ROOT_NAMESPACE) != 0;
      
            }
      
            /**
      
             * Returns this view's identifier.
      
             *
      
             * @return a positive integer used to identify the view or {@link #NO_ID}
      
             *         if the view has no ID
      
             *
      
             * @see #setId(int)
      
             * @see #findViewById(int)
      
             * @attr ref android.R.styleable#View_id
      
             */
      
            @IdRes
      
            @ViewDebug.CapturedViewProperty
      
            public int getId() {
      
                return mID;
      
            }
      
            /**
      
             * Returns this view's tag.
      
             *
      
             * @return the Object stored in this view as a tag, or {@code null} if not
      
             *         set
      
             *
      
             * @see #setTag(Object)
      
             * @see #getTag(int)
      
             */
      
            @ViewDebug.ExportedProperty
      
            public Object getTag() {
      
                return mTag;
      
            }
      
            /**
      
             * Sets the tag associated with this view. A tag can be used to mark
      
             * a view in its hierarchy and does not have to be unique within the
      
             * hierarchy. Tags can also be used to store data within a view without
      
             * resorting to another data structure.
      
             *
      
             * @param tag an Object to tag the view with
      
             *
      
             * @see #getTag()
      
             * @see #setTag(int, Object)
      
             */
      
            public void setTag(final Object tag) {
      
                mTag = tag;
      
            }
      
            /**
      
             * Returns the tag associated with this view and the specified key.
      
             *
      
             * @param key The key identifying the tag
      
             *
      
             * @return the Object stored in this view as a tag, or {@code null} if not
      
             *         set
      
             *
      
             * @see #setTag(int, Object)
      
             * @see #getTag()
      
             */
      
            public Object getTag(int key) {
      
                if (mKeyedTags != null) return mKeyedTags.get(key);
      
                return null;
      
            }
      
            /**
      
             * Sets a tag associated with this view and a key. A tag can be used
      
             * to mark a view in its hierarchy and does not have to be unique within
      
             * the hierarchy. Tags can also be used to store data within a view
      
             * without resorting to another data structure.
      
             *
      
             * The specified key should be an id declared in the resources of the
      
             * application to ensure it is unique (see the <a
      
             * href="{@docRoot}guide/topics/resources/more-resources.html#Id">ID resource type</a>).
      
             * Keys identified as belonging to
      
             * the Android framework or not associated with any package will cause
      
             * an {@link IllegalArgumentException} to be thrown.
      
             *
      
             * @param key The key identifying the tag
      
             * @param tag An Object to tag the view with
      
             *
      
             * @throws IllegalArgumentException If they specified key is not valid
      
             *
      
             * @see #setTag(Object)
      
             * @see #getTag(int)
      
             */
      
            public void setTag(int key, final Object tag) {
      
                // If the package id is 0x00 or 0x01, it's either an undefined package
      
                // or a framework id
      
                if ((key >>> 24) < 2) {
      
                    throw new IllegalArgumentException("The key must be an application-specific "
      
                            + "resource id.");
      
                }
      
                setKeyedTag(key, tag);
      
            }
      
            /**
      
             * Variation of {@link #setTag(int, Object)} that enforces the key to be a
      
             * framework id.
      
             *
      
             * @hide
      
             */
      
            public void setTagInternal(int key, Object tag) {
      
                if ((key >>> 24) != 0x1) {
      
                    throw new IllegalArgumentException("The key must be a framework-specific "
      
                            + "resource id.");
      
                }
      
                setKeyedTag(key, tag);
      
            }
      
            private void setKeyedTag(int key, Object tag) {
      
                if (mKeyedTags == null) {
      
                    mKeyedTags = new SparseArray<Object>(2);
      
                }
      
                mKeyedTags.put(key, tag);
      
            }
      
            /**
      
             * Prints information about this view in the log output, with the tag
      
             * {@link #VIEW_LOG_TAG}.
      
             *
      
             * @hide
      
             */
      
            public void debug() {
      
                debug(0);
      
            }
      
            /**
      
             * Prints information about this view in the log output, with the tag
      
             * {@link #VIEW_LOG_TAG}. Each line in the output is preceded with an
      
             * indentation defined by the <code>depth</code>.
      
             *
      
             * @param depth the indentation level
      
             *
      
             * @hide
      
             */
      
            protected void debug(int depth) {
      
                String output = debugIndent(depth - 1);
      
                output += "+ " + this;
      
                int id = getId();
      
                if (id != -1) {
      
                    output += " (id=" + id + ")";
      
                }
      
                Object tag = getTag();
      
                if (tag != null) {
      
                    output += " (tag=" + tag + ")";
      
                }
      
                Log.d(VIEW_LOG_TAG, output);
      
                if ((mPrivateFlags & PFLAG_FOCUSED) != 0) {
      
                    output = debugIndent(depth) + " FOCUSED";
      
                    Log.d(VIEW_LOG_TAG, output);
      
                }
      
                output = debugIndent(depth);
      
                output += "frame={" + mLeft + ", " + mTop + ", " + mRight
      
                        + ", " + mBottom + "} scroll={" + mScrollX + ", " + mScrollY
      
                        + "} ";
      
                Log.d(VIEW_LOG_TAG, output);
      
                if (mPaddingLeft != 0 || mPaddingTop != 0 || mPaddingRight != 0
      
                        || mPaddingBottom != 0) {
      
                    output = debugIndent(depth);
      
                    output += "padding={" + mPaddingLeft + ", " + mPaddingTop
      
                            + ", " + mPaddingRight + ", " + mPaddingBottom + "}";
      
                    Log.d(VIEW_LOG_TAG, output);
      
                }
      
                output = debugIndent(depth);
      
                output += "mMeasureWidth=" + mMeasuredWidth +
      
                        " mMeasureHeight=" + mMeasuredHeight;
      
                Log.d(VIEW_LOG_TAG, output);
      
                output = debugIndent(depth);
      
                if (mLayoutParams == null) {
      
                    output += "BAD! no layout params";
      
                } else {
      
                    output = mLayoutParams.debug(output);
      
                }
      
                Log.d(VIEW_LOG_TAG, output);
      
                output = debugIndent(depth);
      
                output += "flags={";
      
                output += View.printFlags(mViewFlags);
      
                output += "}";
      
                Log.d(VIEW_LOG_TAG, output);
      
                output = debugIndent(depth);
      
                output += "privateFlags={";
      
                output += View.printPrivateFlags(mPrivateFlags);
      
                output += "}";
      
                Log.d(VIEW_LOG_TAG, output);
      
            }
      
            /**
      
             * Creates a string of whitespaces used for indentation.
      
             *
      
             * @param depth the indentation level
      
             * @return a String containing (depth * 2 + 3) * 2 white spaces
      
             *
      
             * @hide
      
             */
      
            protected static String debugIndent(int depth) {
      
                StringBuilder spaces = new StringBuilder((depth * 2 + 3) * 2);
      
                for (int i = 0; i < (depth * 2) + 3; i++) {
      
                    spaces.append(' ').append(' ');
      
                }
      
                return spaces.toString();
      
            }
      
            /**
      
             * <p>Return the offset of the widget's text baseline from the widget's top
      
             * boundary. If this widget does not support baseline alignment, this
      
             * method returns -1. </p>
      
             *
      
             * @return the offset of the baseline within the widget's bounds or -1
      
             *         if baseline alignment is not supported
      
             */
      
            @ViewDebug.ExportedProperty(category = "layout")
      
            public int getBaseline() {
      
                return -1;
      
            }
      
            /**
      
             * Returns whether the view hierarchy is currently undergoing a layout pass. This
      
             * information is useful to avoid situations such as calling {@link #requestLayout()} during
      
             * a layout pass.
      
             *
      
             * @return whether the view hierarchy is currently undergoing a layout pass
      
             */
      
            public boolean isInLayout() {
      
                ViewRootImpl viewRoot = getViewRootImpl();
      
                return (viewRoot != null && viewRoot.isInLayout());
      
            }
      
            /**
      
             * Call this when something has changed which has invalidated the
      
             * layout of this view. This will schedule a layout pass of the view
      
             * tree. This should not be called while the view hierarchy is currently in a layout
      
             * pass ({@link #isInLayout()}. If layout is happening, the request may be honored at the
      
             * end of the current layout pass (and then layout will run again) or after the current
      
             * frame is drawn and the next layout occurs.
      
             *
      
             * <p>Subclasses which override this method should call the superclass method to
      
             * handle possible request-during-layout errors correctly.</p>
      
             */
      
            @CallSuper
      
            public void requestLayout() {
      
                if (mMeasureCache != null) mMeasureCache.clear();
      
                if (mAttachInfo != null && mAttachInfo.mViewRequestingLayout == null) {
      
                    // Only trigger request-during-layout logic if this is the view requesting it,
      
                    // not the views in its parent hierarchy
      
                    ViewRootImpl viewRoot = getViewRootImpl();
      
                    if (viewRoot != null && viewRoot.isInLayout()) {
      
                        if (!viewRoot.requestLayoutDuringLayout(this)) {
      
                            return;
      
                        }
      
                    }
      
                    mAttachInfo.mViewRequestingLayout = this;
      
                }
      
                mPrivateFlags |= PFLAG_FORCE_LAYOUT;
      
                mPrivateFlags |= PFLAG_INVALIDATED;
      
                if (mParent != null && !mParent.isLayoutRequested()) {
      
                    mParent.requestLayout();
      
                }
      
                if (mAttachInfo != null && mAttachInfo.mViewRequestingLayout == this) {
      
                    mAttachInfo.mViewRequestingLayout = null;
      
                }
      
            }
      
            /**
      
             * Forces this view to be laid out during the next layout pass.
      
             * This method does not call requestLayout() or forceLayout()
      
             * on the parent.
      
             */
      
            public void forceLayout() {
      
                if (mMeasureCache != null) mMeasureCache.clear();
      
                mPrivateFlags |= PFLAG_FORCE_LAYOUT;
      
                mPrivateFlags |= PFLAG_INVALIDATED;
      
            }
      
            /**
      
             * <p>
      
             * This is called to find out how big a view should be. The parent
      
             * supplies constraint information in the width and height parameters.
      
             * </p>
      
             *
      
             * <p>
      
             * The actual measurement work of a view is performed in
      
             * {@link #onMeasure(int, int)}, called by this method. Therefore, only
      
             * {@link #onMeasure(int, int)} can and must be overridden by subclasses.
      
             * </p>
      
             *
      
             *
      
             * @param widthMeasureSpec Horizontal space requirements as imposed by the
      
             *        parent
      
             * @param heightMeasureSpec Vertical space requirements as imposed by the
      
             *        parent
      
             *
      
             * @see #onMeasure(int, int)
      
             */
      
            public final void measure(int widthMeasureSpec, int heightMeasureSpec) {
      
                boolean optical = isLayoutModeOptical(this);
      
                if (optical != isLayoutModeOptical(mParent)) {
      
                    Insets insets = getOpticalInsets();
      
                    int oWidth  = insets.left + insets.right;
      
                    int oHeight = insets.top  + insets.bottom;
      
                    widthMeasureSpec  = MeasureSpec.adjust(widthMeasureSpec,  optical ? -oWidth  : oWidth);
      
                    heightMeasureSpec = MeasureSpec.adjust(heightMeasureSpec, optical ? -oHeight : oHeight);
      
                }
      
                // Suppress sign extension for the low bytes
      
                long key = (long) widthMeasureSpec << 32 | (long) heightMeasureSpec & 0xffffffffL;
      
                if (mMeasureCache == null) mMeasureCache = new LongSparseLongArray(2);
      
                if ((mPrivateFlags & PFLAG_FORCE_LAYOUT) == PFLAG_FORCE_LAYOUT ||
      
                        widthMeasureSpec != mOldWidthMeasureSpec ||
      
                        heightMeasureSpec != mOldHeightMeasureSpec) {
      
                    // first clears the measured dimension flag
      
                    mPrivateFlags &= ~PFLAG_MEASURED_DIMENSION_SET;
      
                    resolveRtlPropertiesIfNeeded();
      
                    int cacheIndex = (mPrivateFlags & PFLAG_FORCE_LAYOUT) == PFLAG_FORCE_LAYOUT ? -1 :
      
                            mMeasureCache.indexOfKey(key);
      
                    if (cacheIndex < 0 || sIgnoreMeasureCache) {
      
                        // measure ourselves, this should set the measured dimension flag back
      
                        onMeasure(widthMeasureSpec, heightMeasureSpec);
      
                        mPrivateFlags3 &= ~PFLAG3_MEASURE_NEEDED_BEFORE_LAYOUT;
      
                    } else {
      
                        long value = mMeasureCache.valueAt(cacheIndex);
      
                        // Casting a long to int drops the high 32 bits, no mask needed
      
                        setMeasuredDimensionRaw((int) (value >> 32), (int) value);
      
                        mPrivateFlags3 |= PFLAG3_MEASURE_NEEDED_BEFORE_LAYOUT;
      
                    }
      
                    // flag not set, setMeasuredDimension() was not invoked, we raise
      
                    // an exception to warn the developer
      
                    if ((mPrivateFlags & PFLAG_MEASURED_DIMENSION_SET) != PFLAG_MEASURED_DIMENSION_SET) {
      
                        throw new IllegalStateException("View with id " + getId() + ": "
      
                                + getClass().getName() + "#onMeasure() did not set the"
      
                                + " measured dimension by calling"
      
                                + " setMeasuredDimension()");
      
                    }
      
                    mPrivateFlags |= PFLAG_LAYOUT_REQUIRED;
      
                }
      
                mOldWidthMeasureSpec = widthMeasureSpec;
      
                mOldHeightMeasureSpec = heightMeasureSpec;
      
                mMeasureCache.put(key, ((long) mMeasuredWidth) << 32 |
      
                        (long) mMeasuredHeight & 0xffffffffL); // suppress sign extension
      
            }
      
            /**
      
             * <p>
      
             * Measure the view and its content to determine the measured width and the
      
             * measured height. This method is invoked by {@link #measure(int, int)} and
      
             * should be overridden by subclasses to provide accurate and efficient
      
             * measurement of their contents.
      
             * </p>
      
             *
      
             * <p>
      
             * <strong>CONTRACT:</strong> When overriding this method, you
      
             * <em>must</em> call {@link #setMeasuredDimension(int, int)} to store the
      
             * measured width and height of this view. Failure to do so will trigger an
      
             * <code>IllegalStateException</code>, thrown by
      
             * {@link #measure(int, int)}. Calling the superclass'
      
             * {@link #onMeasure(int, int)} is a valid use.
      
             * </p>
      
             *
      
             * <p>
      
             * The base class implementation of measure defaults to the background size,
      
             * unless a larger size is allowed by the MeasureSpec. Subclasses should
      
             * override {@link #onMeasure(int, int)} to provide better measurements of
      
             * their content.
      
             * </p>
      
             *
      
             * <p>
      
             * If this method is overridden, it is the subclass's responsibility to make
      
             * sure the measured height and width are at least the view's minimum height
      
             * and width ({@link #getSuggestedMinimumHeight()} and
      
             * {@link #getSuggestedMinimumWidth()}).
      
             * </p>
      
             *
      
             * @param widthMeasureSpec horizontal space requirements as imposed by the parent.
      
             *                         The requirements are encoded with
      
             *                         {@link android.view.View.MeasureSpec}.
      
             * @param heightMeasureSpec vertical space requirements as imposed by the parent.
      
             *                         The requirements are encoded with
      
             *                         {@link android.view.View.MeasureSpec}.
      
             *
      
             * @see #getMeasuredWidth()
      
             * @see #getMeasuredHeight()
      
             * @see #setMeasuredDimension(int, int)
      
             * @see #getSuggestedMinimumHeight()
      
             * @see #getSuggestedMinimumWidth()
      
             * @see android.view.View.MeasureSpec#getMode(int)
      
             * @see android.view.View.MeasureSpec#getSize(int)
      
             */
      
            protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
      
                setMeasuredDimension(getDefaultSize(getSuggestedMinimumWidth(), widthMeasureSpec),
      
                        getDefaultSize(getSuggestedMinimumHeight(), heightMeasureSpec));
      
            }
      
            /**
      
             * <p>This method must be called by {@link #onMeasure(int, int)} to store the
      
             * measured width and measured height. Failing to do so will trigger an
      
             * exception at measurement time.</p>
      
             *
      
             * @param measuredWidth The measured width of this view.  May be a complex
      
             * bit mask as defined by {@link #MEASURED_SIZE_MASK} and
      
             * {@link #MEASURED_STATE_TOO_SMALL}.
      
             * @param measuredHeight The measured height of this view.  May be a complex
      
             * bit mask as defined by {@link #MEASURED_SIZE_MASK} and
      
             * {@link #MEASURED_STATE_TOO_SMALL}.
      
             */
      
            protected final void setMeasuredDimension(int measuredWidth, int measuredHeight) {
      
                boolean optical = isLayoutModeOptical(this);
      
                if (optical != isLayoutModeOptical(mParent)) {
      
                    Insets insets = getOpticalInsets();
      
                    int opticalWidth  = insets.left + insets.right;
      
                    int opticalHeight = insets.top  + insets.bottom;
      
                    measuredWidth  += optical ? opticalWidth  : -opticalWidth;
      
                    measuredHeight += optical ? opticalHeight : -opticalHeight;
      
                }
      
                setMeasuredDimensionRaw(measuredWidth, measuredHeight);
      
            }
      
            /**
      
             * Sets the measured dimension without extra processing for things like optical bounds.
      
             * Useful for reapplying consistent values that have already been cooked with adjustments
      
             * for optical bounds, etc. such as those from the measurement cache.
      
             *
      
             * @param measuredWidth The measured width of this view.  May be a complex
      
             * bit mask as defined by {@link #MEASURED_SIZE_MASK} and
      
             * {@link #MEASURED_STATE_TOO_SMALL}.
      
             * @param measuredHeight The measured height of this view.  May be a complex
      
             * bit mask as defined by {@link #MEASURED_SIZE_MASK} and
      
             * {@link #MEASURED_STATE_TOO_SMALL}.
      
             */
      
            private void setMeasuredDimensionRaw(int measuredWidth, int measuredHeight) {
      
                mMeasuredWidth = measuredWidth;
      
                mMeasuredHeight = measuredHeight;
      
                mPrivateFlags |= PFLAG_MEASURED_DIMENSION_SET;
      
            }
      
            /**
      
             * Merge two states as returned by {@link #getMeasuredState()}.
      
             * @param curState The current state as returned from a view or the result
      
             * of combining multiple views.
      
             * @param newState The new view state to combine.
      
             * @return Returns a new integer reflecting the combination of the two
      
             * states.
      
             */
      
            public static int combineMeasuredStates(int curState, int newState) {
      
                return curState | newState;
      
            }
      
            /**
      
             * Version of {@link #resolveSizeAndState(int, int, int)}
      
             * returning only the {@link #MEASURED_SIZE_MASK} bits of the result.
      
             */
      
            public static int resolveSize(int size, int measureSpec) {
      
                return resolveSizeAndState(size, measureSpec, 0) & MEASURED_SIZE_MASK;
      
            }
      
            /**
      
             * Utility to reconcile a desired size and state, with constraints imposed
      
             * by a MeasureSpec. Will take the desired size, unless a different size
      
             * is imposed by the constraints. The returned value is a compound integer,
      
             * with the resolved size in the {@link #MEASURED_SIZE_MASK} bits and
      
             * optionally the bit {@link #MEASURED_STATE_TOO_SMALL} set if the
      
             * resulting size is smaller than the size the view wants to be.
      
             *
      
             * @param size How big the view wants to be.
      
             * @param measureSpec Constraints imposed by the parent.
      
             * @param childMeasuredState Size information bit mask for the view's
      
             *                           children.
      
             * @return Size information bit mask as defined by
      
             *         {@link #MEASURED_SIZE_MASK} and
      
             *         {@link #MEASURED_STATE_TOO_SMALL}.
      
             */
      
            public static int resolveSizeAndState(int size, int measureSpec, int childMeasuredState) {
      
                final int specMode = MeasureSpec.getMode(measureSpec);
      
                final int specSize = MeasureSpec.getSize(measureSpec);
      
                final int result;
      
                switch (specMode) {
      
                    case MeasureSpec.AT_MOST:
      
                        if (specSize < size) {
      
                            result = specSize | MEASURED_STATE_TOO_SMALL;
      
                        } else {
      
                            result = size;
      
                        }
      
                        break;
      
                    case MeasureSpec.EXACTLY:
      
                        result = specSize;
      
                        break;
      
                    case MeasureSpec.UNSPECIFIED:
      
                    default:
      
                        result = size;
      
                }
      
                return result | (childMeasuredState & MEASURED_STATE_MASK);
      
            }
      
            /**
      
             * Utility to return a default size. Uses the supplied size if the
      
             * MeasureSpec imposed no constraints. Will get larger if allowed
      
             * by the MeasureSpec.
      
             *
      
             * @param size Default size for this view
      
             * @param measureSpec Constraints imposed by the parent
      
             * @return The size this view should be.
      
             */
      
            public static int getDefaultSize(int size, int measureSpec) {
      
                int result = size;
      
                int specMode = MeasureSpec.getMode(measureSpec);
      
                int specSize = MeasureSpec.getSize(measureSpec);
      
                switch (specMode) {
      
                case MeasureSpec.UNSPECIFIED:
      
                    result = size;
      
                    break;
      
                case MeasureSpec.AT_MOST:
      
                case MeasureSpec.EXACTLY:
      
                    result = specSize;
      
                    break;
      
                }
      
                return result;
      
            }
      
            /**
      
             * Returns the suggested minimum height that the view should use. This
      
             * returns the maximum of the view's minimum height
      
             * and the background's minimum height
      
             * ({@link android.graphics.drawable.Drawable#getMinimumHeight()}).
      
             * <p>
      
             * When being used in {@link #onMeasure(int, int)}, the caller should still
      
             * ensure the returned height is within the requirements of the parent.
      
             *
      
             * @return The suggested minimum height of the view.
      
             */
      
            protected int getSuggestedMinimumHeight() {
      
                return (mBackground == null) ? mMinHeight : max(mMinHeight, mBackground.getMinimumHeight());
      
            }
      
            /**
      
             * Returns the suggested minimum width that the view should use. This
      
             * returns the maximum of the view's minimum width
      
             * and the background's minimum width
      
             *  ({@link android.graphics.drawable.Drawable#getMinimumWidth()}).
      
             * <p>
      
             * When being used in {@link #onMeasure(int, int)}, the caller should still
      
             * ensure the returned width is within the requirements of the parent.
      
             *
      
             * @return The suggested minimum width of the view.
      
             */
      
            protected int getSuggestedMinimumWidth() {
      
                return (mBackground == null) ? mMinWidth : max(mMinWidth, mBackground.getMinimumWidth());
      
            }
      
            /**
      
             * Returns the minimum height of the view.
      
             *
      
             * @return the minimum height the view will try to be.
      
             *
      
             * @see #setMinimumHeight(int)
      
             *
      
             * @attr ref android.R.styleable#View_minHeight
      
             */
      
            public int getMinimumHeight() {
      
                return mMinHeight;
      
            }
      
            /**
      
             * Sets the minimum height of the view. It is not guaranteed the view will
      
             * be able to achieve this minimum height (for example, if its parent layout
      
             * constrains it with less available height).
      
             *
      
             * @param minHeight The minimum height the view will try to be.
      
             *
      
             * @see #getMinimumHeight()
      
             *
      
             * @attr ref android.R.styleable#View_minHeight
      
             */
      
            public void setMinimumHeight(int minHeight) {
      
                mMinHeight = minHeight;
      
                requestLayout();
      
            }
      
            /**
      
             * Returns the minimum width of the view.
      
             *
      
             * @return the minimum width the view will try to be.
      
             *
      
             * @see #setMinimumWidth(int)
      
             *
      
             * @attr ref android.R.styleable#View_minWidth
      
             */
      
            public int getMinimumWidth() {
      
                return mMinWidth;
      
            }
      
            /**
      
             * Sets the minimum width of the view. It is not guaranteed the view will
      
             * be able to achieve this minimum width (for example, if its parent layout
      
             * constrains it with less available width).
      
             *
      
             * @param minWidth The minimum width the view will try to be.
      
             *
      
             * @see #getMinimumWidth()
      
             *
      
             * @attr ref android.R.styleable#View_minWidth
      
             */
      
            public void setMinimumWidth(int minWidth) {
      
                mMinWidth = minWidth;
      
                requestLayout();
      
            }
      
            /**
      
             * Get the animation currently associated with this view.
      
             *
      
             * @return The animation that is currently playing or
      
             *         scheduled to play for this view.
      
             */
      
            public Animation getAnimation() {
      
                return mCurrentAnimation;
      
            }
      
            /**
      
             * Start the specified animation now.
      
             *
      
             * @param animation the animation to start now
      
             */
      
            public void startAnimation(Animation animation) {
      
                animation.setStartTime(Animation.START_ON_FIRST_FRAME);
      
                setAnimation(animation);
      
                invalidateParentCaches();
      
                invalidate(true);
      
            }
      
            /**
      
             * Cancels any animations for this view.
      
             */
      
            public void clearAnimation() {
      
                if (mCurrentAnimation != null) {
      
                    mCurrentAnimation.detach();
      
                }
      
                mCurrentAnimation = null;
      
                invalidateParentIfNeeded();
      
            }
      
            /**
      
             * Sets the next animation to play for this view.
      
             * If you want the animation to play immediately, use
      
             * {@link #startAnimation(android.view.animation.Animation)} instead.
      
             * This method provides allows fine-grained
      
             * control over the start time and invalidation, but you
      
             * must make sure that 1) the animation has a start time set, and
      
             * 2) the view's parent (which controls animations on its children)
      
             * will be invalidated when the animation is supposed to
      
             * start.
      
             *
      
             * @param animation The next animation, or null.
      
             */
      
            public void setAnimation(Animation animation) {
      
                mCurrentAnimation = animation;
      
                if (animation != null) {
      
                    // If the screen is off assume the animation start time is now instead of
      
                    // the next frame we draw. Keeping the START_ON_FIRST_FRAME start time
      
                    // would cause the animation to start when the screen turns back on
      
                    if (mAttachInfo != null && mAttachInfo.mDisplayState == Display.STATE_OFF
      
                            && animation.getStartTime() == Animation.START_ON_FIRST_FRAME) {
      
                        animation.setStartTime(AnimationUtils.currentAnimationTimeMillis());
      
                    }
      
                    animation.reset();
      
                }
      
            }
      
            /**
      
             * Invoked by a parent ViewGroup to notify the start of the animation
      
             * currently associated with this view. If you override this method,
      
             * always call super.onAnimationStart();
      
             *
      
             * @see #setAnimation(android.view.animation.Animation)
      
             * @see #getAnimation()
      
             */
      
            @CallSuper
      
            protected void onAnimationStart() {
      
                mPrivateFlags |= PFLAG_ANIMATION_STARTED;
      
            }
      
            /**
      
             * Invoked by a parent ViewGroup to notify the end of the animation
      
             * currently associated with this view. If you override this method,
      
             * always call super.onAnimationEnd();
      
             *
      
             * @see #setAnimation(android.view.animation.Animation)
      
             * @see #getAnimation()
      
             */
      
            @CallSuper
      
            protected void onAnimationEnd() {
      
                mPrivateFlags &= ~PFLAG_ANIMATION_STARTED;
      
            }
      
            /**
      
             * Invoked if there is a Transform that involves alpha. Subclass that can
      
             * draw themselves with the specified alpha should return true, and then
      
             * respect that alpha when their onDraw() is called. If this returns false
      
             * then the view may be redirected to draw into an offscreen buffer to
      
             * fulfill the request, which will look fine, but may be slower than if the
      
             * subclass handles it internally. The default implementation returns false.
      
             *
      
             * @param alpha The alpha (0..255) to apply to the view's drawing
      
             * @return true if the view can draw with the specified alpha.
      
             */
      
            protected boolean onSetAlpha(int alpha) {
      
                return false;
      
            }
      
            /**
      
             * This is used by the RootView to perform an optimization when
      
             * the view hierarchy contains one or several SurfaceView.
      
             * SurfaceView is always considered transparent, but its children are not,
      
             * therefore all View objects remove themselves from the global transparent
      
             * region (passed as a parameter to this function).
      
             *
      
             * @param region The transparent region for this ViewAncestor (window).
      
             *
      
             * @return Returns true if the effective visibility of the view at this
      
             * point is opaque, regardless of the transparent region; returns false
      
             * if it is possible for underlying windows to be seen behind the view.
      
             *
      
             * {@hide}
      
             */
      
            public boolean gatherTransparentRegion(Region region) {
      
                final AttachInfo attachInfo = mAttachInfo;
      
                if (region != null && attachInfo != null) {
      
                    final int pflags = mPrivateFlags;
      
                    if ((pflags & PFLAG_SKIP_DRAW) == 0) {
      
                        // The SKIP_DRAW flag IS NOT set, so this view draws. We need to
      
                        // remove it from the transparent region.
      
                        final int[] location = attachInfo.mTransparentLocation;
      
                        getLocationInWindow(location);
      
                        region.op(location[0], location[1], location[0] + mRight - mLeft,
      
                                location[1] + mBottom - mTop, Region.Op.DIFFERENCE);
      
                    } else {
      
                        if (mBackground != null && mBackground.getOpacity() != PixelFormat.TRANSPARENT) {
      
                            // The SKIP_DRAW flag IS set and the background drawable exists, we remove
      
                            // the background drawable's non-transparent parts from this transparent region.
      
                            applyDrawableToTransparentRegion(mBackground, region);
      
                        }
      
                        if (mForegroundInfo != null && mForegroundInfo.mDrawable != null
      
                                && mForegroundInfo.mDrawable.getOpacity() != PixelFormat.TRANSPARENT) {
      
                            // Similarly, we remove the foreground drawable's non-transparent parts.
      
                            applyDrawableToTransparentRegion(mForegroundInfo.mDrawable, region);
      
                        }
      
                    }
      
                }
      
                return true;
      
            }
      
            /**
      
             * Play a sound effect for this view.
      
             *
      
             * <p>The framework will play sound effects for some built in actions, such as
      
             * clicking, but you may wish to play these effects in your widget,
      
             * for instance, for internal navigation.
      
             *
      
             * <p>The sound effect will only be played if sound effects are enabled by the user, and
      
             * {@link #isSoundEffectsEnabled()} is true.
      
             *
      
             * @param soundConstant One of the constants defined in {@link SoundEffectConstants}
      
             */
      
            public void playSoundEffect(int soundConstant) {
      
                if (mAttachInfo == null || mAttachInfo.mRootCallbacks == null || !isSoundEffectsEnabled()) {
      
                    return;
      
                }
      
                mAttachInfo.mRootCallbacks.playSoundEffect(soundConstant);
      
            }
      
            /**
      
             * BZZZTT!!1!
      
             *
      
             * <p>Provide haptic feedback to the user for this view.
      
             *
      
             * <p>The framework will provide haptic feedback for some built in actions,
      
             * such as long presses, but you may wish to provide feedback for your
      
             * own widget.
      
             *
      
             * <p>The feedback will only be performed if
      
             * {@link #isHapticFeedbackEnabled()} is true.
      
             *
      
             * @param feedbackConstant One of the constants defined in
      
             * {@link HapticFeedbackConstants}
      
             */
      
            public boolean performHapticFeedback(int feedbackConstant) {
      
                return performHapticFeedback(feedbackConstant, 0);
      
            }
      
            /**
      
             * BZZZTT!!1!
      
             *
      
             * <p>Like {@link #performHapticFeedback(int)}, with additional options.
      
             *
      
             * @param feedbackConstant One of the constants defined in
      
             * {@link HapticFeedbackConstants}
      
             * @param flags Additional flags as per {@link HapticFeedbackConstants}.
      
             */
      
            public boolean performHapticFeedback(int feedbackConstant, int flags) {
      
                if (mAttachInfo == null) {
      
                    return false;
      
                }
      
                //noinspection SimplifiableIfStatement
      
                if ((flags & HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING) == 0
      
                        && !isHapticFeedbackEnabled()) {
      
                    return false;
      
                }
      
                return mAttachInfo.mRootCallbacks.performHapticFeedback(feedbackConstant,
      
                        (flags & HapticFeedbackConstants.FLAG_IGNORE_GLOBAL_SETTING) != 0);
      
            }
      
            /**
      
             * Request that the visibility of the status bar or other screen/window
      
             * decorations be changed.
      
             *
      
             * <p>This method is used to put the over device UI into temporary modes
      
             * where the user's attention is focused more on the application content,
      
             * by dimming or hiding surrounding system affordances.  This is typically
      
             * used in conjunction with {@link Window#FEATURE_ACTION_BAR_OVERLAY
      
             * Window.FEATURE_ACTION_BAR_OVERLAY}, allowing the applications content
      
             * to be placed behind the action bar (and with these flags other system
      
             * affordances) so that smooth transitions between hiding and showing them
      
             * can be done.
      
             *
      
             * <p>Two representative examples of the use of system UI visibility is
      
             * implementing a content browsing application (like a magazine reader)
      
             * and a video playing application.
      
             *
      
             * <p>The first code shows a typical implementation of a View in a content
      
             * browsing application.  In this implementation, the application goes
      
             * into a content-oriented mode by hiding the status bar and action bar,
      
             * and putting the navigation elements into lights out mode.  The user can
      
             * then interact with content while in this mode.  Such an application should
      
             * provide an easy way for the user to toggle out of the mode (such as to
      
             * check information in the status bar or access notifications).  In the
      
             * implementation here, this is done simply by tapping on the content.
      
             *
      
             * {@sample development/samples/ApiDemos/src/com/example/android/apis/view/ContentBrowserActivity.java
      
             *      content}
      
             *
      
             * <p>This second code sample shows a typical implementation of a View
      
             * in a video playing application.  In this situation, while the video is
      
             * playing the application would like to go into a complete full-screen mode,
      
             * to use as much of the display as possible for the video.  When in this state
      
             * the user can not interact with the application; the system intercepts
      
             * touching on the screen to pop the UI out of full screen mode.  See
      
             * {@link #fitSystemWindows(Rect)} for a sample layout that goes with this code.
      
             *
      
             * {@sample development/samples/ApiDemos/src/com/example/android/apis/view/VideoPlayerActivity.java
      
             *      content}
      
             *
      
             * @param visibility  Bitwise-or of flags {@link #SYSTEM_UI_FLAG_LOW_PROFILE},
      
             * {@link #SYSTEM_UI_FLAG_HIDE_NAVIGATION}, {@link #SYSTEM_UI_FLAG_FULLSCREEN},
      
             * {@link #SYSTEM_UI_FLAG_LAYOUT_STABLE}, {@link #SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION},
      
             * {@link #SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN}, {@link #SYSTEM_UI_FLAG_IMMERSIVE},
      
             * and {@link #SYSTEM_UI_FLAG_IMMERSIVE_STICKY}.
      
             */
      
            public void setSystemUiVisibility(int visibility) {
      
                if (visibility != mSystemUiVisibility) {
      
                    mSystemUiVisibility = visibility;
      
                    if (mParent != null && mAttachInfo != null && !mAttachInfo.mRecomputeGlobalAttributes) {
      
                        mParent.recomputeViewAttributes(this);
      
                    }
      
                }
      
            }
      
            /**
      
             * Returns the last {@link #setSystemUiVisibility(int)} that this view has requested.
      
             * @return  Bitwise-or of flags {@link #SYSTEM_UI_FLAG_LOW_PROFILE},
      
             * {@link #SYSTEM_UI_FLAG_HIDE_NAVIGATION}, {@link #SYSTEM_UI_FLAG_FULLSCREEN},
      
             * {@link #SYSTEM_UI_FLAG_LAYOUT_STABLE}, {@link #SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION},
      
             * {@link #SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN}, {@link #SYSTEM_UI_FLAG_IMMERSIVE},
      
             * and {@link #SYSTEM_UI_FLAG_IMMERSIVE_STICKY}.
      
             */
      
            public int getSystemUiVisibility() {
      
                return mSystemUiVisibility;
      
            }
      
            /**
      
             * Returns the current system UI visibility that is currently set for
      
             * the entire window.  This is the combination of the
      
             * {@link #setSystemUiVisibility(int)} values supplied by all of the
      
             * views in the window.
      
             */
      
            public int getWindowSystemUiVisibility() {
      
                return mAttachInfo != null ? mAttachInfo.mSystemUiVisibility : 0;
      
            }
      
            /**
      
             * Override to find out when the window's requested system UI visibility
      
             * has changed, that is the value returned by {@link #getWindowSystemUiVisibility()}.
      
             * This is different from the callbacks received through
      
             * {@link #setOnSystemUiVisibilityChangeListener(OnSystemUiVisibilityChangeListener)}
      
             * in that this is only telling you about the local request of the window,
      
             * not the actual values applied by the system.
      
             */
      
            public void onWindowSystemUiVisibilityChanged(int visible) {
      
            }
      
            /**
      
             * Dispatch callbacks to {@link #onWindowSystemUiVisibilityChanged(int)} down
      
             * the view hierarchy.
      
             */
      
            public void dispatchWindowSystemUiVisiblityChanged(int visible) {
      
                onWindowSystemUiVisibilityChanged(visible);
      
            }
      
            /**
      
             * Set a listener to receive callbacks when the visibility of the system bar changes.
      
             * @param l  The {@link OnSystemUiVisibilityChangeListener} to receive callbacks.
      
             */
      
            public void setOnSystemUiVisibilityChangeListener(OnSystemUiVisibilityChangeListener l) {
      
                getListenerInfo().mOnSystemUiVisibilityChangeListener = l;
      
                if (mParent != null && mAttachInfo != null && !mAttachInfo.mRecomputeGlobalAttributes) {
      
                    mParent.recomputeViewAttributes(this);
      
                }
      
            }
      
            /**
      
             * Dispatch callbacks to {@link #setOnSystemUiVisibilityChangeListener} down
      
             * the view hierarchy.
      
             */
      
            public void dispatchSystemUiVisibilityChanged(int visibility) {
      
                ListenerInfo li = mListenerInfo;
      
                if (li != null && li.mOnSystemUiVisibilityChangeListener != null) {
      
                    li.mOnSystemUiVisibilityChangeListener.onSystemUiVisibilityChange(
      
                            visibility & PUBLIC_STATUS_BAR_VISIBILITY_MASK);
      
                }
      
            }
      
            boolean updateLocalSystemUiVisibility(int localValue, int localChanges) {
      
                int val = (mSystemUiVisibility&~localChanges) | (localValue&localChanges);
      
                if (val != mSystemUiVisibility) {
      
                    setSystemUiVisibility(val);
      
                    return true;
      
                }
      
                return false;
      
            }
      
            /** @hide */
      
            public void setDisabledSystemUiVisibility(int flags) {
      
                if (mAttachInfo != null) {
      
                    if (mAttachInfo.mDisabledSystemUiVisibility != flags) {
      
                        mAttachInfo.mDisabledSystemUiVisibility = flags;
      
                        if (mParent != null) {
      
                            mParent.recomputeViewAttributes(this);
      
                        }
      
                    }
      
                }
      
            }
      
            /**
      
             * Creates an image that the system displays during the drag and drop
      
             * operation. This is called a &quot;drag shadow&quot;. The default implementation
      
             * for a DragShadowBuilder based on a View returns an image that has exactly the same
      
             * appearance as the given View. The default also positions the center of the drag shadow
      
             * directly under the touch point. If no View is provided (the constructor with no parameters
      
             * is used), and {@link #onProvideShadowMetrics(Point,Point) onProvideShadowMetrics()} and
      
             * {@link #onDrawShadow(Canvas) onDrawShadow()} are not overridden, then the
      
             * default is an invisible drag shadow.
      
             * <p>
      
             * You are not required to use the View you provide to the constructor as the basis of the
      
             * drag shadow. The {@link #onDrawShadow(Canvas) onDrawShadow()} method allows you to draw
      
             * anything you want as the drag shadow.
      
             * </p>
      
             * <p>
      
             *  You pass a DragShadowBuilder object to the system when you start the drag. The system
      
             *  calls {@link #onProvideShadowMetrics(Point,Point) onProvideShadowMetrics()} to get the
      
             *  size and position of the drag shadow. It uses this data to construct a
      
             *  {@link android.graphics.Canvas} object, then it calls {@link #onDrawShadow(Canvas) onDrawShadow()}
      
             *  so that your application can draw the shadow image in the Canvas.
      
             * </p>
      
             *
      
             * <div class="special reference">
      
             * <h3>Developer Guides</h3>
      
             * <p>For a guide to implementing drag and drop features, read the
      
             * <a href="{@docRoot}guide/topics/ui/drag-drop.html">Drag and Drop</a> developer guide.</p>
      
             * </div>
      
             */
      
            public static class DragShadowBuilder {
      
                private final WeakReference<View> mView;
      
                /**
      
                 * Constructs a shadow image builder based on a View. By default, the resulting drag
      
                 * shadow will have the same appearance and dimensions as the View, with the touch point
      
                 * over the center of the View.
      
                 * @param view A View. Any View in scope can be used.
      
                 */
      
                public DragShadowBuilder(View view) {
      
                    mView = new WeakReference<View>(view);
      
                }
      
                /**
      
                 * Construct a shadow builder object with no associated View.  This
      
                 * constructor variant is only useful when the {@link #onProvideShadowMetrics(Point, Point)}
      
                 * and {@link #onDrawShadow(Canvas)} methods are also overridden in order
      
                 * to supply the drag shadow's dimensions and appearance without
      
                 * reference to any View object. If they are not overridden, then the result is an
      
                 * invisible drag shadow.
      
                 */
      
                public DragShadowBuilder() {
      
                    mView = new WeakReference<View>(null);
      
                }
      
                /**
      
                 * Returns the View object that had been passed to the
      
                 * {@link #View.DragShadowBuilder(View)}
      
                 * constructor.  If that View parameter was {@code null} or if the
      
                 * {@link #View.DragShadowBuilder()}
      
                 * constructor was used to instantiate the builder object, this method will return
      
                 * null.
      
                 *
      
                 * @return The View object associate with this builder object.
      
                 */
      
                @SuppressWarnings({"JavadocReference"})
      
                final public View getView() {
      
                    return mView.get();
      
                }
      
                /**
      
                 * Provides the metrics for the shadow image. These include the dimensions of
      
                 * the shadow image, and the point within that shadow that should
      
                 * be centered under the touch location while dragging.
      
                 * <p>
      
                 * The default implementation sets the dimensions of the shadow to be the
      
                 * same as the dimensions of the View itself and centers the shadow under
      
                 * the touch point.
      
                 * </p>
      
                 *
      
                 * @param shadowSize A {@link android.graphics.Point} containing the width and height
      
                 * of the shadow image. Your application must set {@link android.graphics.Point#x} to the
      
                 * desired width and must set {@link android.graphics.Point#y} to the desired height of the
      
                 * image.
      
                 *
      
                 * @param shadowTouchPoint A {@link android.graphics.Point} for the position within the
      
                 * shadow image that should be underneath the touch point during the drag and drop
      
                 * operation. Your application must set {@link android.graphics.Point#x} to the
      
                 * X coordinate and {@link android.graphics.Point#y} to the Y coordinate of this position.
      
                 */
      
                public void onProvideShadowMetrics(Point shadowSize, Point shadowTouchPoint) {
      
                    final View view = mView.get();
      
                    if (view != null) {
      
                        shadowSize.set(view.getWidth(), view.getHeight());
      
                        shadowTouchPoint.set(shadowSize.x / 2, shadowSize.y / 2);
      
                    } else {
      
                        Log.e(View.VIEW_LOG_TAG, "Asked for drag thumb metrics but no view");
      
                    }
      
                }
      
                /**
      
                 * Draws the shadow image. The system creates the {@link android.graphics.Canvas} object
      
                 * based on the dimensions it received from the
      
                 * {@link #onProvideShadowMetrics(Point, Point)} callback.
      
                 *
      
                 * @param canvas A {@link android.graphics.Canvas} object in which to draw the shadow image.
      
                 */
      
                public void onDrawShadow(Canvas canvas) {
      
                    final View view = mView.get();
      
                    if (view != null) {
      
                        view.draw(canvas);
      
                    } else {
      
                        Log.e(View.VIEW_LOG_TAG, "Asked to draw drag shadow but no view");
      
                    }
      
                }
      
            }
      
            /**
      
             * Starts a drag and drop operation. When your application calls this method, it passes a
      
             * {@link android.view.View.DragShadowBuilder} object to the system. The
      
             * system calls this object's {@link DragShadowBuilder#onProvideShadowMetrics(Point, Point)}
      
             * to get metrics for the drag shadow, and then calls the object's
      
             * {@link DragShadowBuilder#onDrawShadow(Canvas)} to draw the drag shadow itself.
      
             * <p>
      
             *  Once the system has the drag shadow, it begins the drag and drop operation by sending
      
             *  drag events to all the View objects in your application that are currently visible. It does
      
             *  this either by calling the View object's drag listener (an implementation of
      
             *  {@link android.view.View.OnDragListener#onDrag(View,DragEvent) onDrag()} or by calling the
      
             *  View object's {@link android.view.View#onDragEvent(DragEvent) onDragEvent()} method.
      
             *  Both are passed a {@link android.view.DragEvent} object that has a
      
             *  {@link android.view.DragEvent#getAction()} value of
      
             *  {@link android.view.DragEvent#ACTION_DRAG_STARTED}.
      
             * </p>
      
             * <p>
      
             * Your application can invoke startDrag() on any attached View object. The View object does not
      
             * need to be the one used in {@link android.view.View.DragShadowBuilder}, nor does it need to
      
             * be related to the View the user selected for dragging.
      
             * </p>
      
             * @param data A {@link android.content.ClipData} object pointing to the data to be
      
             * transferred by the drag and drop operation.
      
             * @param shadowBuilder A {@link android.view.View.DragShadowBuilder} object for building the
      
             * drag shadow.
      
             * @param myLocalState An {@link java.lang.Object} containing local data about the drag and
      
             * drop operation. This Object is put into every DragEvent object sent by the system during the
      
             * current drag.
      
             * <p>
      
             * myLocalState is a lightweight mechanism for the sending information from the dragged View
      
             * to the target Views. For example, it can contain flags that differentiate between a
      
             * a copy operation and a move operation.
      
             * </p>
      
             * @param flags Flags that control the drag and drop operation. No flags are currently defined,
      
             * so the parameter should be set to 0.
      
             * @return {@code true} if the method completes successfully, or
      
             * {@code false} if it fails anywhere. Returning {@code false} means the system was unable to
      
             * do a drag, and so no drag operation is in progress.
      
             */
      
            public final boolean startDrag(ClipData data, DragShadowBuilder shadowBuilder,
      
                    Object myLocalState, int flags) {
      
                if (ViewDebug.DEBUG_DRAG) {
      
                    Log.d(VIEW_LOG_TAG, "startDrag: data=" + data + " flags=" + flags);
      
                }
      
                boolean okay = false;
      
                Point shadowSize = new Point();
      
                Point shadowTouchPoint = new Point();
      
                shadowBuilder.onProvideShadowMetrics(shadowSize, shadowTouchPoint);
      
                if ((shadowSize.x < 0) || (shadowSize.y < 0) ||
      
                        (shadowTouchPoint.x < 0) || (shadowTouchPoint.y < 0)) {
      
                    throw new IllegalStateException("Drag shadow dimensions must not be negative");
      
                }
      
                if (ViewDebug.DEBUG_DRAG) {
      
                    Log.d(VIEW_LOG_TAG, "drag shadow: width=" + shadowSize.x + " height=" + shadowSize.y
      
                            + " shadowX=" + shadowTouchPoint.x + " shadowY=" + shadowTouchPoint.y);
      
                }
      
                Surface surface = new Surface();
      
                try {
      
                    IBinder token = mAttachInfo.mSession.prepareDrag(mAttachInfo.mWindow,
      
                            flags, shadowSize.x, shadowSize.y, surface);
      
                    if (ViewDebug.DEBUG_DRAG) Log.d(VIEW_LOG_TAG, "prepareDrag returned token=" + token
      
                            + " surface=" + surface);
      
                    if (token != null) {
      
                        Canvas canvas = surface.lockCanvas(null);
      
                        try {
      
                            canvas.drawColor(0, PorterDuff.Mode.CLEAR);
      
                            shadowBuilder.onDrawShadow(canvas);
      
                        } finally {
      
                            surface.unlockCanvasAndPost(canvas);
      
                        }
      
                        final ViewRootImpl root = getViewRootImpl();
      
                        // Cache the local state object for delivery with DragEvents
      
                        root.setLocalDragState(myLocalState);
      
                        // repurpose 'shadowSize' for the last touch point
      
                        root.getLastTouchPoint(shadowSize);
      
                        okay = mAttachInfo.mSession.performDrag(mAttachInfo.mWindow, token,
      
                                shadowSize.x, shadowSize.y,
      
                                shadowTouchPoint.x, shadowTouchPoint.y, data);
      
                        if (ViewDebug.DEBUG_DRAG) Log.d(VIEW_LOG_TAG, "performDrag returned " + okay);
      
                        // Off and running!  Release our local surface instance; the drag
      
                        // shadow surface is now managed by the system process.
      
                        surface.release();
      
                    }
      
                } catch (Exception e) {
      
                    Log.e(VIEW_LOG_TAG, "Unable to initiate drag", e);
      
                    surface.destroy();
      
                }
      
                return okay;
      
            }
      
            /**
      
             * Handles drag events sent by the system following a call to
      
             * {@link android.view.View#startDrag(ClipData,DragShadowBuilder,Object,int) startDrag()}.
      
             *<p>
      
             * When the system calls this method, it passes a
      
             * {@link android.view.DragEvent} object. A call to
      
             * {@link android.view.DragEvent#getAction()} returns one of the action type constants defined
      
             * in DragEvent. The method uses these to determine what is happening in the drag and drop
      
             * operation.
      
             * @param event The {@link android.view.DragEvent} sent by the system.
      
             * The {@link android.view.DragEvent#getAction()} method returns an action type constant defined
      
             * in DragEvent, indicating the type of drag event represented by this object.
      
             * @return {@code true} if the method was successful, otherwise {@code false}.
      
             * <p>
      
             *  The method should return {@code true} in response to an action type of
      
             *  {@link android.view.DragEvent#ACTION_DRAG_STARTED} to receive drag events for the current
      
             *  operation.
      
             * </p>
      
             * <p>
      
             *  The method should also return {@code true} in response to an action type of
      
             *  {@link android.view.DragEvent#ACTION_DROP} if it consumed the drop, or
      
             *  {@code false} if it didn't.
      
             * </p>
      
             */
      
            public boolean onDragEvent(DragEvent event) {
      
                return false;
      
            }
      
            /**
      
             * Detects if this View is enabled and has a drag event listener.
      
             * If both are true, then it calls the drag event listener with the
      
             * {@link android.view.DragEvent} it received. If the drag event listener returns
      
             * {@code true}, then dispatchDragEvent() returns {@code true}.
      
             * <p>
      
             * For all other cases, the method calls the
      
             * {@link android.view.View#onDragEvent(DragEvent) onDragEvent()} drag event handler
      
             * method and returns its result.
      
             * </p>
      
             * <p>
      
             * This ensures that a drag event is always consumed, even if the View does not have a drag
      
             * event listener. However, if the View has a listener and the listener returns true, then
      
             * onDragEvent() is not called.
      
             * </p>
      
             */
      
            public boolean dispatchDragEvent(DragEvent event) {
      
                ListenerInfo li = mListenerInfo;
      
                //noinspection SimplifiableIfStatement
      
                if (li != null && li.mOnDragListener != null && (mViewFlags & ENABLED_MASK) == ENABLED
      
                        && li.mOnDragListener.onDrag(this, event)) {
      
                    return true;
      
                }
      
                return onDragEvent(event);
      
            }
      
            boolean canAcceptDrag() {
      
                return (mPrivateFlags2 & PFLAG2_DRAG_CAN_ACCEPT) != 0;
      
            }
      
            /**
      
             * This needs to be a better API (NOT ON VIEW) before it is exposed.  If
      
             * it is ever exposed at all.
      
             * @hide
      
             */
      
            public void onCloseSystemDialogs(String reason) {
      
            }
      
            /**
      
             * Given a Drawable whose bounds have been set to draw into this view,
      
             * update a Region being computed for
      
             * {@link #gatherTransparentRegion(android.graphics.Region)} so
      
             * that any non-transparent parts of the Drawable are removed from the
      
             * given transparent region.
      
             *
      
             * @param dr The Drawable whose transparency is to be applied to the region.
      
             * @param region A Region holding the current transparency information,
      
             * where any parts of the region that are set are considered to be
      
             * transparent.  On return, this region will be modified to have the
      
             * transparency information reduced by the corresponding parts of the
      
             * Drawable that are not transparent.
      
             * {@hide}
      
             */
      
            public void applyDrawableToTransparentRegion(Drawable dr, Region region) {
      
                if (DBG) {
      
                    Log.i("View", "Getting transparent region for: " + this);
      
                }
      
                final Region r = dr.getTransparentRegion();
      
                final Rect db = dr.getBounds();
      
                final AttachInfo attachInfo = mAttachInfo;
      
                if (r != null && attachInfo != null) {
      
                    final int w = getRight()-getLeft();
      
                    final int h = getBottom()-getTop();
      
                    if (db.left > 0) {
      
                        //Log.i("VIEW", "Drawable left " + db.left + " > view 0");
      
                        r.op(0, 0, db.left, h, Region.Op.UNION);
      
                    }
      
                    if (db.right < w) {
      
                        //Log.i("VIEW", "Drawable right " + db.right + " < view " + w);
      
                        r.op(db.right, 0, w, h, Region.Op.UNION);
      
                    }
      
                    if (db.top > 0) {
      
                        //Log.i("VIEW", "Drawable top " + db.top + " > view 0");
      
                        r.op(0, 0, w, db.top, Region.Op.UNION);
      
                    }
      
                    if (db.bottom < h) {
      
                        //Log.i("VIEW", "Drawable bottom " + db.bottom + " < view " + h);
      
                        r.op(0, db.bottom, w, h, Region.Op.UNION);
      
                    }
      
                    final int[] location = attachInfo.mTransparentLocation;
      
                    getLocationInWindow(location);
      
                    r.translate(location[0], location[1]);
      
                    region.op(r, Region.Op.INTERSECT);
      
                } else {
      
                    region.op(db, Region.Op.DIFFERENCE);
      
                }
      
            }
      
            private void checkForLongClick(int delayOffset) {
      
                if ((mViewFlags & LONG_CLICKABLE) == LONG_CLICKABLE) {
      
                    mHasPerformedLongPress = false;
      
                    if (mPendingCheckForLongPress == null) {
      
                        mPendingCheckForLongPress = new CheckForLongPress();
      
                    }
      
                    mPendingCheckForLongPress.rememberWindowAttachCount();
      
                    postDelayed(mPendingCheckForLongPress,
      
                            ViewConfiguration.getLongPressTimeout() - delayOffset);
      
                }
      
            }
      
            /**
      
             * Inflate a view from an XML resource.  This convenience method wraps the {@link
      
             * LayoutInflater} class, which provides a full range of options for view inflation.
      
             *
      
             * @param context The Context object for your activity or application.
      
             * @param resource The resource ID to inflate
      
             * @param root A view group that will be the parent.  Used to properly inflate the
      
             * layout_* parameters.
      
             * @see LayoutInflater
      
             */
      
            public static View inflate(Context context, @LayoutRes int resource, ViewGroup root) {
      
                LayoutInflater factory = LayoutInflater.from(context);
      
                return factory.inflate(resource, root);
      
            }
      
            /**
      
             * Scroll the view with standard behavior for scrolling beyond the normal
      
             * content boundaries. Views that call this method should override
      
             * {@link #onOverScrolled(int, int, boolean, boolean)} to respond to the
      
             * results of an over-scroll operation.
      
             *
      
             * Views can use this method to handle any touch or fling-based scrolling.
      
             *
      
             * @param deltaX Change in X in pixels
      
             * @param deltaY Change in Y in pixels
      
             * @param scrollX Current X scroll value in pixels before applying deltaX
      
             * @param scrollY Current Y scroll value in pixels before applying deltaY
      
             * @param scrollRangeX Maximum content scroll range along the X axis
      
             * @param scrollRangeY Maximum content scroll range along the Y axis
      
             * @param maxOverScrollX Number of pixels to overscroll by in either direction
      
             *          along the X axis.
      
             * @param maxOverScrollY Number of pixels to overscroll by in either direction
      
             *          along the Y axis.
      
             * @param isTouchEvent true if this scroll operation is the result of a touch event.
      
             * @return true if scrolling was clamped to an over-scroll boundary along either
      
             *          axis, false otherwise.
      
             */
      
            @SuppressWarnings({"UnusedParameters"})
      
            protected boolean overScrollBy(int deltaX, int deltaY,
      
                    int scrollX, int scrollY,
      
                    int scrollRangeX, int scrollRangeY,
      
                    int maxOverScrollX, int maxOverScrollY,
      
                    boolean isTouchEvent) {
      
                final int overScrollMode = mOverScrollMode;
      
                final boolean canScrollHorizontal =
      
                        computeHorizontalScrollRange() > computeHorizontalScrollExtent();
      
                final boolean canScrollVertical =
      
                        computeVerticalScrollRange() > computeVerticalScrollExtent();
      
                final boolean overScrollHorizontal = overScrollMode == OVER_SCROLL_ALWAYS ||
      
                        (overScrollMode == OVER_SCROLL_IF_CONTENT_SCROLLS && canScrollHorizontal);
      
                final boolean overScrollVertical = overScrollMode == OVER_SCROLL_ALWAYS ||
      
                        (overScrollMode == OVER_SCROLL_IF_CONTENT_SCROLLS && canScrollVertical);
      
                int newScrollX = scrollX + deltaX;
      
                if (!overScrollHorizontal) {
      
                    maxOverScrollX = 0;
      
                }
      
                int newScrollY = scrollY + deltaY;
      
                if (!overScrollVertical) {
      
                    maxOverScrollY = 0;
      
                }
      
                // Clamp values if at the limits and record
      
                final int left = -maxOverScrollX;
      
                final int right = maxOverScrollX + scrollRangeX;
      
                final int top = -maxOverScrollY;
      
                final int bottom = maxOverScrollY + scrollRangeY;
      
                boolean clampedX = false;
      
                if (newScrollX > right) {
      
                    newScrollX = right;
      
                    clampedX = true;
      
                } else if (newScrollX < left) {
      
                    newScrollX = left;
      
                    clampedX = true;
      
                }
      
                boolean clampedY = false;
      
                if (newScrollY > bottom) {
      
                    newScrollY = bottom;
      
                    clampedY = true;
      
                } else if (newScrollY < top) {
      
                    newScrollY = top;
      
                    clampedY = true;
      
                }
      
                onOverScrolled(newScrollX, newScrollY, clampedX, clampedY);
      
                return clampedX || clampedY;
      
            }
      
            /**
      
             * Called by {@link #overScrollBy(int, int, int, int, int, int, int, int, boolean)} to
      
             * respond to the results of an over-scroll operation.
      
             *
      
             * @param scrollX New X scroll value in pixels
      
             * @param scrollY New Y scroll value in pixels
      
             * @param clampedX True if scrollX was clamped to an over-scroll boundary
      
             * @param clampedY True if scrollY was clamped to an over-scroll boundary
      
             */
      
            protected void onOverScrolled(int scrollX, int scrollY,
      
                    boolean clampedX, boolean clampedY) {
      
                // Intentionally empty.
      
            }
      
            /**
      
             * Returns the over-scroll mode for this view. The result will be
      
             * one of {@link #OVER_SCROLL_ALWAYS} (default), {@link #OVER_SCROLL_IF_CONTENT_SCROLLS}
      
             * (allow over-scrolling only if the view content is larger than the container),
      
             * or {@link #OVER_SCROLL_NEVER}.
      
             *
      
             * @return This view's over-scroll mode.
      
             */
      
            public int getOverScrollMode() {
      
                return mOverScrollMode;
      
            }
      
            /**
      
             * Set the over-scroll mode for this view. Valid over-scroll modes are
      
             * {@link #OVER_SCROLL_ALWAYS} (default), {@link #OVER_SCROLL_IF_CONTENT_SCROLLS}
      
             * (allow over-scrolling only if the view content is larger than the container),
      
             * or {@link #OVER_SCROLL_NEVER}.
      
             *
      
             * Setting the over-scroll mode of a view will have an effect only if the
      
             * view is capable of scrolling.
      
             *
      
             * @param overScrollMode The new over-scroll mode for this view.
      
             */
      
            public void setOverScrollMode(int overScrollMode) {
      
                if (overScrollMode != OVER_SCROLL_ALWAYS &&
      
                        overScrollMode != OVER_SCROLL_IF_CONTENT_SCROLLS &&
      
                        overScrollMode != OVER_SCROLL_NEVER) {
      
                    throw new IllegalArgumentException("Invalid overscroll mode " + overScrollMode);
      
                }
      
                mOverScrollMode = overScrollMode;
      
            }
      
            /**
      
             * Enable or disable nested scrolling for this view.
      
             *
      
             * <p>If this property is set to true the view will be permitted to initiate nested
      
             * scrolling operations with a compatible parent view in the current hierarchy. If this
      
             * view does not implement nested scrolling this will have no effect. Disabling nested scrolling
      
             * while a nested scroll is in progress has the effect of {@link #stopNestedScroll() stopping}
      
             * the nested scroll.</p>
      
             *
      
             * @param enabled true to enable nested scrolling, false to disable
      
             *
      
             * @see #isNestedScrollingEnabled()
      
             */
      
            public void setNestedScrollingEnabled(boolean enabled) {
      
                if (enabled) {
      
                    mPrivateFlags3 |= PFLAG3_NESTED_SCROLLING_ENABLED;
      
                } else {
      
                    stopNestedScroll();
      
                    mPrivateFlags3 &= ~PFLAG3_NESTED_SCROLLING_ENABLED;
      
                }
      
            }
      
            /**
      
             * Returns true if nested scrolling is enabled for this view.
      
             *
      
             * <p>If nested scrolling is enabled and this View class implementation supports it,
      
             * this view will act as a nested scrolling child view when applicable, forwarding data
      
             * about the scroll operation in progress to a compatible and cooperating nested scrolling
      
             * parent.</p>
      
             *
      
             * @return true if nested scrolling is enabled
      
             *
      
             * @see #setNestedScrollingEnabled(boolean)
      
             */
      
            public boolean isNestedScrollingEnabled() {
      
                return (mPrivateFlags3 & PFLAG3_NESTED_SCROLLING_ENABLED) ==
      
                        PFLAG3_NESTED_SCROLLING_ENABLED;
      
            }
      
            /**
      
             * Begin a nestable scroll operation along the given axes.
      
             *
      
             * <p>A view starting a nested scroll promises to abide by the following contract:</p>
      
             *
      
             * <p>The view will call startNestedScroll upon initiating a scroll operation. In the case
      
             * of a touch scroll this corresponds to the initial {@link MotionEvent#ACTION_DOWN}.
      
             * In the case of touch scrolling the nested scroll will be terminated automatically in
      
             * the same manner as {@link ViewParent#requestDisallowInterceptTouchEvent(boolean)}.
      
             * In the event of programmatic scrolling the caller must explicitly call
      
             * {@link #stopNestedScroll()} to indicate the end of the nested scroll.</p>
      
             *
      
             * <p>If <code>startNestedScroll</code> returns true, a cooperative parent was found.
      
             * If it returns false the caller may ignore the rest of this contract until the next scroll.
      
             * Calling startNestedScroll while a nested scroll is already in progress will return true.</p>
      
             *
      
             * <p>At each incremental step of the scroll the caller should invoke
      
             * {@link #dispatchNestedPreScroll(int, int, int[], int[]) dispatchNestedPreScroll}
      
             * once it has calculated the requested scrolling delta. If it returns true the nested scrolling
      
             * parent at least partially consumed the scroll and the caller should adjust the amount it
      
             * scrolls by.</p>
      
             *
      
             * <p>After applying the remainder of the scroll delta the caller should invoke
      
             * {@link #dispatchNestedScroll(int, int, int, int, int[]) dispatchNestedScroll}, passing
      
             * both the delta consumed and the delta unconsumed. A nested scrolling parent may treat
      
             * these values differently. See {@link ViewParent#onNestedScroll(View, int, int, int, int)}.
      
             * </p>
      
             *
      
             * @param axes Flags consisting of a combination of {@link #SCROLL_AXIS_HORIZONTAL} and/or
      
             *             {@link #SCROLL_AXIS_VERTICAL}.
      
             * @return true if a cooperative parent was found and nested scrolling has been enabled for
      
             *         the current gesture.
      
             *
      
             * @see #stopNestedScroll()
      
             * @see #dispatchNestedPreScroll(int, int, int[], int[])
      
             * @see #dispatchNestedScroll(int, int, int, int, int[])
      
             */
      
            public boolean startNestedScroll(int axes) {
      
                if (hasNestedScrollingParent()) {
      
                    // Already in progress
      
                    return true;
      
                }
      
                if (isNestedScrollingEnabled()) {
      
                    ViewParent p = getParent();
      
                    View child = this;
      
                    while (p != null) {
      
                        try {
      
                            if (p.onStartNestedScroll(child, this, axes)) {
      
                                mNestedScrollingParent = p;
      
                                p.onNestedScrollAccepted(child, this, axes);
      
                                return true;
      
                            }
      
                        } catch (AbstractMethodError e) {
      
                            Log.e(VIEW_LOG_TAG, "ViewParent " + p + " does not implement interface " +
      
                                    "method onStartNestedScroll", e);
      
                            // Allow the search upward to continue
      
                        }
      
                        if (p instanceof View) {
      
                            child = (View) p;
      
                        }
      
                        p = p.getParent();
      
                    }
      
                }
      
                return false;
      
            }
      
            /**
      
             * Stop a nested scroll in progress.
      
             *
      
             * <p>Calling this method when a nested scroll is not currently in progress is harmless.</p>
      
             *
      
             * @see #startNestedScroll(int)
      
             */
      
            public void stopNestedScroll() {
      
                if (mNestedScrollingParent != null) {
      
                    mNestedScrollingParent.onStopNestedScroll(this);
      
                    mNestedScrollingParent = null;
      
                }
      
            }
      
            /**
      
             * Returns true if this view has a nested scrolling parent.
      
             *
      
             * <p>The presence of a nested scrolling parent indicates that this view has initiated
      
             * a nested scroll and it was accepted by an ancestor view further up the view hierarchy.</p>
      
             *
      
             * @return whether this view has a nested scrolling parent
      
             */
      
            public boolean hasNestedScrollingParent() {
      
                return mNestedScrollingParent != null;
      
            }
      
            /**
      
             * Dispatch one step of a nested scroll in progress.
      
             *
      
             * <p>Implementations of views that support nested scrolling should call this to report
      
             * info about a scroll in progress to the current nested scrolling parent. If a nested scroll
      
             * is not currently in progress or nested scrolling is not
      
             * {@link #isNestedScrollingEnabled() enabled} for this view this method does nothing.</p>
      
             *
      
             * <p>Compatible View implementations should also call
      
             * {@link #dispatchNestedPreScroll(int, int, int[], int[]) dispatchNestedPreScroll} before
      
             * consuming a component of the scroll event themselves.</p>
      
             *
      
             * @param dxConsumed Horizontal distance in pixels consumed by this view during this scroll step
      
             * @param dyConsumed Vertical distance in pixels consumed by this view during this scroll step
      
             * @param dxUnconsumed Horizontal scroll distance in pixels not consumed by this view
      
             * @param dyUnconsumed Horizontal scroll distance in pixels not consumed by this view
      
             * @param offsetInWindow Optional. If not null, on return this will contain the offset
      
             *                       in local view coordinates of this view from before this operation
      
             *                       to after it completes. View implementations may use this to adjust
      
             *                       expected input coordinate tracking.
      
             * @return true if the event was dispatched, false if it could not be dispatched.
      
             * @see #dispatchNestedPreScroll(int, int, int[], int[])
      
             */
      
            public boolean dispatchNestedScroll(int dxConsumed, int dyConsumed,
      
                    int dxUnconsumed, int dyUnconsumed, @Nullable @Size(2) int[] offsetInWindow) {
      
                if (isNestedScrollingEnabled() && mNestedScrollingParent != null) {
      
                    if (dxConsumed != 0 || dyConsumed != 0 || dxUnconsumed != 0 || dyUnconsumed != 0) {
      
                        int startX = 0;
      
                        int startY = 0;
      
                        if (offsetInWindow != null) {
      
                            getLocationInWindow(offsetInWindow);
      
                            startX = offsetInWindow[0];
      
                            startY = offsetInWindow[1];
      
                        }
      
                        mNestedScrollingParent.onNestedScroll(this, dxConsumed, dyConsumed,
      
                                dxUnconsumed, dyUnconsumed);
      
                        if (offsetInWindow != null) {
      
                            getLocationInWindow(offsetInWindow);
      
                            offsetInWindow[0] -= startX;
      
                            offsetInWindow[1] -= startY;
      
                        }
      
                        return true;
      
                    } else if (offsetInWindow != null) {
      
                        // No motion, no dispatch. Keep offsetInWindow up to date.
      
                        offsetInWindow[0] = 0;
      
                        offsetInWindow[1] = 0;
      
                    }
      
                }
      
                return false;
      
            }
      
            /**
      
             * Dispatch one step of a nested scroll in progress before this view consumes any portion of it.
      
             *
      
             * <p>Nested pre-scroll events are to nested scroll events what touch intercept is to touch.
      
             * <code>dispatchNestedPreScroll</code> offers an opportunity for the parent view in a nested
      
             * scrolling operation to consume some or all of the scroll operation before the child view
      
             * consumes it.</p>
      
             *
      
             * @param dx Horizontal scroll distance in pixels
      
             * @param dy Vertical scroll distance in pixels
      
             * @param consumed Output. If not null, consumed[0] will contain the consumed component of dx
      
             *                 and consumed[1] the consumed dy.
      
             * @param offsetInWindow Optional. If not null, on return this will contain the offset
      
             *                       in local view coordinates of this view from before this operation
      
             *                       to after it completes. View implementations may use this to adjust
      
             *                       expected input coordinate tracking.
      
             * @return true if the parent consumed some or all of the scroll delta
      
             * @see #dispatchNestedScroll(int, int, int, int, int[])
      
             */
      
            public boolean dispatchNestedPreScroll(int dx, int dy,
      
                    @Nullable @Size(2) int[] consumed, @Nullable @Size(2) int[] offsetInWindow) {
      
                if (isNestedScrollingEnabled() && mNestedScrollingParent != null) {
      
                    if (dx != 0 || dy != 0) {
      
                        int startX = 0;
      
                        int startY = 0;
      
                        if (offsetInWindow != null) {
      
                            getLocationInWindow(offsetInWindow);
      
                            startX = offsetInWindow[0];
      
                            startY = offsetInWindow[1];
      
                        }
      
                        if (consumed == null) {
      
                            if (mTempNestedScrollConsumed == null) {
      
                                mTempNestedScrollConsumed = new int[2];
      
                            }
      
                            consumed = mTempNestedScrollConsumed;
      
                        }
      
                        consumed[0] = 0;
      
                        consumed[1] = 0;
      
                        mNestedScrollingParent.onNestedPreScroll(this, dx, dy, consumed);
      
                        if (offsetInWindow != null) {
      
                            getLocationInWindow(offsetInWindow);
      
                            offsetInWindow[0] -= startX;
      
                            offsetInWindow[1] -= startY;
      
                        }
      
                        return consumed[0] != 0 || consumed[1] != 0;
      
                    } else if (offsetInWindow != null) {
      
                        offsetInWindow[0] = 0;
      
                        offsetInWindow[1] = 0;
      
                    }
      
                }
      
                return false;
      
            }
      
            /**
      
             * Dispatch a fling to a nested scrolling parent.
      
             *
      
             * <p>This method should be used to indicate that a nested scrolling child has detected
      
             * suitable conditions for a fling. Generally this means that a touch scroll has ended with a
      
             * {@link VelocityTracker velocity} in the direction of scrolling that meets or exceeds
      
             * the {@link ViewConfiguration#getScaledMinimumFlingVelocity() minimum fling velocity}
      
             * along a scrollable axis.</p>
      
             *
      
             * <p>If a nested scrolling child view would normally fling but it is at the edge of
      
             * its own content, it can use this method to delegate the fling to its nested scrolling
      
             * parent instead. The parent may optionally consume the fling or observe a child fling.</p>
      
             *
      
             * @param velocityX Horizontal fling velocity in pixels per second
      
             * @param velocityY Vertical fling velocity in pixels per second
      
             * @param consumed true if the child consumed the fling, false otherwise
      
             * @return true if the nested scrolling parent consumed or otherwise reacted to the fling
      
             */
      
            public boolean dispatchNestedFling(float velocityX, float velocityY, boolean consumed) {
      
                if (isNestedScrollingEnabled() && mNestedScrollingParent != null) {
      
                    return mNestedScrollingParent.onNestedFling(this, velocityX, velocityY, consumed);
      
                }
      
                return false;
      
            }
      
            /**
      
             * Dispatch a fling to a nested scrolling parent before it is processed by this view.
      
             *
      
             * <p>Nested pre-fling events are to nested fling events what touch intercept is to touch
      
             * and what nested pre-scroll is to nested scroll. <code>dispatchNestedPreFling</code>
      
             * offsets an opportunity for the parent view in a nested fling to fully consume the fling
      
             * before the child view consumes it. If this method returns <code>true</code>, a nested
      
             * parent view consumed the fling and this view should not scroll as a result.</p>
      
             *
      
             * <p>For a better user experience, only one view in a nested scrolling chain should consume
      
             * the fling at a time. If a parent view consumed the fling this method will return false.
      
             * Custom view implementations should account for this in two ways:</p>
      
             *
      
             * <ul>
      
             *     <li>If a custom view is paged and needs to settle to a fixed page-point, do not
      
             *     call <code>dispatchNestedPreFling</code>; consume the fling and settle to a valid
      
             *     position regardless.</li>
      
             *     <li>If a nested parent does consume the fling, this view should not scroll at all,
      
             *     even to settle back to a valid idle position.</li>
      
             * </ul>
      
             *
      
             * <p>Views should also not offer fling velocities to nested parent views along an axis
      
             * where scrolling is not currently supported; a {@link android.widget.ScrollView ScrollView}
      
             * should not offer a horizontal fling velocity to its parents since scrolling along that
      
             * axis is not permitted and carrying velocity along that motion does not make sense.</p>
      
             *
      
             * @param velocityX Horizontal fling velocity in pixels per second
      
             * @param velocityY Vertical fling velocity in pixels per second
      
             * @return true if a nested scrolling parent consumed the fling
      
             */
      
            public boolean dispatchNestedPreFling(float velocityX, float velocityY) {
      
                if (isNestedScrollingEnabled() && mNestedScrollingParent != null) {
      
                    return mNestedScrollingParent.onNestedPreFling(this, velocityX, velocityY);
      
                }
      
                return false;
      
            }
      
            /**
      
             * Gets a scale factor that determines the distance the view should scroll
      
             * vertically in response to {@link MotionEvent#ACTION_SCROLL}.
      
             * @return The vertical scroll scale factor.
      
             * @hide
      
             */
      
            protected float getVerticalScrollFactor() {
      
                if (mVerticalScrollFactor == 0) {
      
                    TypedValue outValue = new TypedValue();
      
                    if (!mContext.getTheme().resolveAttribute(
      
                            com.android.internal.R.attr.listPreferredItemHeight, outValue, true)) {
      
                        throw new IllegalStateException(
      
                                "Expected theme to define listPreferredItemHeight.");
      
                    }
      
                    mVerticalScrollFactor = outValue.getDimension(
      
                            mContext.getResources().getDisplayMetrics());
      
                }
      
                return mVerticalScrollFactor;
      
            }
      
            /**
      
             * Gets a scale factor that determines the distance the view should scroll
      
             * horizontally in response to {@link MotionEvent#ACTION_SCROLL}.
      
             * @return The horizontal scroll scale factor.
      
             * @hide
      
             */
      
            protected float getHorizontalScrollFactor() {
      
                // TODO: Should use something else.
      
                return getVerticalScrollFactor();
      
            }
      
            /**
      
             * Return the value specifying the text direction or policy that was set with
      
             * {@link #setTextDirection(int)}.
      
             *
      
             * @return the defined text direction. It can be one of:
      
             *
      
             * {@link #TEXT_DIRECTION_INHERIT},
      
             * {@link #TEXT_DIRECTION_FIRST_STRONG},
      
             * {@link #TEXT_DIRECTION_ANY_RTL},
      
             * {@link #TEXT_DIRECTION_LTR},
      
             * {@link #TEXT_DIRECTION_RTL},
      
             * {@link #TEXT_DIRECTION_LOCALE},
      
             * {@link #TEXT_DIRECTION_FIRST_STRONG_LTR},
      
             * {@link #TEXT_DIRECTION_FIRST_STRONG_RTL}
      
             *
      
             * @attr ref android.R.styleable#View_textDirection
      
             *
      
             * @hide
      
             */
      
            @ViewDebug.ExportedProperty(category = "text", mapping = {
      
                    @ViewDebug.IntToString(from = TEXT_DIRECTION_INHERIT, to = "INHERIT"),
      
                    @ViewDebug.IntToString(from = TEXT_DIRECTION_FIRST_STRONG, to = "FIRST_STRONG"),
      
                    @ViewDebug.IntToString(from = TEXT_DIRECTION_ANY_RTL, to = "ANY_RTL"),
      
                    @ViewDebug.IntToString(from = TEXT_DIRECTION_LTR, to = "LTR"),
      
                    @ViewDebug.IntToString(from = TEXT_DIRECTION_RTL, to = "RTL"),
      
                    @ViewDebug.IntToString(from = TEXT_DIRECTION_LOCALE, to = "LOCALE"),
      
                    @ViewDebug.IntToString(from = TEXT_DIRECTION_FIRST_STRONG_LTR, to = "FIRST_STRONG_LTR"),
      
                    @ViewDebug.IntToString(from = TEXT_DIRECTION_FIRST_STRONG_RTL, to = "FIRST_STRONG_RTL")
      
            })
      
            public int getRawTextDirection() {
      
                return (mPrivateFlags2 & PFLAG2_TEXT_DIRECTION_MASK) >> PFLAG2_TEXT_DIRECTION_MASK_SHIFT;
      
            }
      
            /**
      
             * Set the text direction.
      
             *
      
             * @param textDirection the direction to set. Should be one of:
      
             *
      
             * {@link #TEXT_DIRECTION_INHERIT},
      
             * {@link #TEXT_DIRECTION_FIRST_STRONG},
      
             * {@link #TEXT_DIRECTION_ANY_RTL},
      
             * {@link #TEXT_DIRECTION_LTR},
      
             * {@link #TEXT_DIRECTION_RTL},
      
             * {@link #TEXT_DIRECTION_LOCALE}
      
             * {@link #TEXT_DIRECTION_FIRST_STRONG_LTR},
      
             * {@link #TEXT_DIRECTION_FIRST_STRONG_RTL},
      
             *
      
             * Resolution will be done if the value is set to TEXT_DIRECTION_INHERIT. The resolution
      
             * proceeds up the parent chain of the view to get the value. If there is no parent, then it will
      
             * return the default {@link #TEXT_DIRECTION_FIRST_STRONG}.
      
             *
      
             * @attr ref android.R.styleable#View_textDirection
      
             */
      
            public void setTextDirection(int textDirection) {
      
                if (getRawTextDirection() != textDirection) {
      
                    // Reset the current text direction and the resolved one
      
                    mPrivateFlags2 &= ~PFLAG2_TEXT_DIRECTION_MASK;
      
                    resetResolvedTextDirection();
      
                    // Set the new text direction
      
                    mPrivateFlags2 |= ((textDirection << PFLAG2_TEXT_DIRECTION_MASK_SHIFT) & PFLAG2_TEXT_DIRECTION_MASK);
      
                    // Do resolution
      
                    resolveTextDirection();
      
                    // Notify change
      
                    onRtlPropertiesChanged(getLayoutDirection());
      
                    // Refresh
      
                    requestLayout();
      
                    invalidate(true);
      
                }
      
            }
      
            /**
      
             * Return the resolved text direction.
      
             *
      
             * @return the resolved text direction. Returns one of:
      
             *
      
             * {@link #TEXT_DIRECTION_FIRST_STRONG},
      
             * {@link #TEXT_DIRECTION_ANY_RTL},
      
             * {@link #TEXT_DIRECTION_LTR},
      
             * {@link #TEXT_DIRECTION_RTL},
      
             * {@link #TEXT_DIRECTION_LOCALE},
      
             * {@link #TEXT_DIRECTION_FIRST_STRONG_LTR},
      
             * {@link #TEXT_DIRECTION_FIRST_STRONG_RTL}
      
             *
      
             * @attr ref android.R.styleable#View_textDirection
      
             */
      
            @ViewDebug.ExportedProperty(category = "text", mapping = {
      
                    @ViewDebug.IntToString(from = TEXT_DIRECTION_INHERIT, to = "INHERIT"),
      
                    @ViewDebug.IntToString(from = TEXT_DIRECTION_FIRST_STRONG, to = "FIRST_STRONG"),
      
                    @ViewDebug.IntToString(from = TEXT_DIRECTION_ANY_RTL, to = "ANY_RTL"),
      
                    @ViewDebug.IntToString(from = TEXT_DIRECTION_LTR, to = "LTR"),
      
                    @ViewDebug.IntToString(from = TEXT_DIRECTION_RTL, to = "RTL"),
      
                    @ViewDebug.IntToString(from = TEXT_DIRECTION_LOCALE, to = "LOCALE"),
      
                    @ViewDebug.IntToString(from = TEXT_DIRECTION_FIRST_STRONG_LTR, to = "FIRST_STRONG_LTR"),
      
                    @ViewDebug.IntToString(from = TEXT_DIRECTION_FIRST_STRONG_RTL, to = "FIRST_STRONG_RTL")
      
            })
      
            public int getTextDirection() {
      
                return (mPrivateFlags2 & PFLAG2_TEXT_DIRECTION_RESOLVED_MASK) >> PFLAG2_TEXT_DIRECTION_RESOLVED_MASK_SHIFT;
      
            }
      
            /**
      
             * Resolve the text direction.
      
             *
      
             * @return true if resolution has been done, false otherwise.
      
             *
      
             * @hide
      
             */
      
            public boolean resolveTextDirection() {
      
                // Reset any previous text direction resolution
      
                mPrivateFlags2 &= ~(PFLAG2_TEXT_DIRECTION_RESOLVED | PFLAG2_TEXT_DIRECTION_RESOLVED_MASK);
      
                if (hasRtlSupport()) {
      
                    // Set resolved text direction flag depending on text direction flag
      
                    final int textDirection = getRawTextDirection();
      
                    switch(textDirection) {
      
                        case TEXT_DIRECTION_INHERIT:
      
                            if (!canResolveTextDirection()) {
      
                                // We cannot do the resolution if there is no parent, so use the default one
      
                                mPrivateFlags2 |= PFLAG2_TEXT_DIRECTION_RESOLVED_DEFAULT;
      
                                // Resolution will need to happen again later
      
                                return false;
      
                            }
      
                            // Parent has not yet resolved, so we still return the default
      
                            try {
      
                                if (!mParent.isTextDirectionResolved()) {
      
                                    mPrivateFlags2 |= PFLAG2_TEXT_DIRECTION_RESOLVED_DEFAULT;
      
                                    // Resolution will need to happen again later
      
                                    return false;
      
                                }
      
                            } catch (AbstractMethodError e) {
      
                                Log.e(VIEW_LOG_TAG, mParent.getClass().getSimpleName() +
      
                                        " does not fully implement ViewParent", e);
      
                                mPrivateFlags2 |= PFLAG2_TEXT_DIRECTION_RESOLVED |
      
                                        PFLAG2_TEXT_DIRECTION_RESOLVED_DEFAULT;
      
                                return true;
      
                            }
      
                            // Set current resolved direction to the same value as the parent's one
      
                            int parentResolvedDirection;
      
                            try {
      
                                parentResolvedDirection = mParent.getTextDirection();
      
                            } catch (AbstractMethodError e) {
      
                                Log.e(VIEW_LOG_TAG, mParent.getClass().getSimpleName() +
      
                                        " does not fully implement ViewParent", e);
      
                                parentResolvedDirection = TEXT_DIRECTION_LTR;
      
                            }
      
                            switch (parentResolvedDirection) {
      
                                case TEXT_DIRECTION_FIRST_STRONG:
      
                                case TEXT_DIRECTION_ANY_RTL:
      
                                case TEXT_DIRECTION_LTR:
      
                                case TEXT_DIRECTION_RTL:
      
                                case TEXT_DIRECTION_LOCALE:
      
                                case TEXT_DIRECTION_FIRST_STRONG_LTR:
      
                                case TEXT_DIRECTION_FIRST_STRONG_RTL:
      
                                    mPrivateFlags2 |=
      
                                            (parentResolvedDirection << PFLAG2_TEXT_DIRECTION_RESOLVED_MASK_SHIFT);
      
                                    break;
      
                                default:
      
                                    // Default resolved direction is "first strong" heuristic
      
                                    mPrivateFlags2 |= PFLAG2_TEXT_DIRECTION_RESOLVED_DEFAULT;
      
                            }
      
                            break;
      
                        case TEXT_DIRECTION_FIRST_STRONG:
      
                        case TEXT_DIRECTION_ANY_RTL:
      
                        case TEXT_DIRECTION_LTR:
      
                        case TEXT_DIRECTION_RTL:
      
                        case TEXT_DIRECTION_LOCALE:
      
                        case TEXT_DIRECTION_FIRST_STRONG_LTR:
      
                        case TEXT_DIRECTION_FIRST_STRONG_RTL:
      
                            // Resolved direction is the same as text direction
      
                            mPrivateFlags2 |= (textDirection << PFLAG2_TEXT_DIRECTION_RESOLVED_MASK_SHIFT);
      
                            break;
      
                        default:
      
                            // Default resolved direction is "first strong" heuristic
      
                            mPrivateFlags2 |= PFLAG2_TEXT_DIRECTION_RESOLVED_DEFAULT;
      
                    }
      
                } else {
      
                    // Default resolved direction is "first strong" heuristic
      
                    mPrivateFlags2 |= PFLAG2_TEXT_DIRECTION_RESOLVED_DEFAULT;
      
                }
      
                // Set to resolved
      
                mPrivateFlags2 |= PFLAG2_TEXT_DIRECTION_RESOLVED;
      
                return true;
      
            }
      
            /**
      
             * Check if text direction resolution can be done.
      
             *
      
             * @return true if text direction resolution can be done otherwise return false.
      
             */
      
            public boolean canResolveTextDirection() {
      
                switch (getRawTextDirection()) {
      
                    case TEXT_DIRECTION_INHERIT:
      
                        if (mParent != null) {
      
                            try {
      
                                return mParent.canResolveTextDirection();
      
                            } catch (AbstractMethodError e) {
      
                                Log.e(VIEW_LOG_TAG, mParent.getClass().getSimpleName() +
      
                                        " does not fully implement ViewParent", e);
      
                            }
      
                        }
      
                        return false;
      
                    default:
      
                        return true;
      
                }
      
            }
      
            /**
      
             * Reset resolved text direction. Text direction will be resolved during a call to
      
             * {@link #onMeasure(int, int)}.
      
             *
      
             * @hide
      
             */
      
            public void resetResolvedTextDirection() {
      
                // Reset any previous text direction resolution
      
                mPrivateFlags2 &= ~(PFLAG2_TEXT_DIRECTION_RESOLVED | PFLAG2_TEXT_DIRECTION_RESOLVED_MASK);
      
                // Set to default value
      
                mPrivateFlags2 |= PFLAG2_TEXT_DIRECTION_RESOLVED_DEFAULT;
      
            }
      
            /**
      
             * @return true if text direction is inherited.
      
             *
      
             * @hide
      
             */
      
            public boolean isTextDirectionInherited() {
      
                return (getRawTextDirection() == TEXT_DIRECTION_INHERIT);
      
            }
      
            /**
      
             * @return true if text direction is resolved.
      
             */
      
            public boolean isTextDirectionResolved() {
      
                return (mPrivateFlags2 & PFLAG2_TEXT_DIRECTION_RESOLVED) == PFLAG2_TEXT_DIRECTION_RESOLVED;
      
            }
      
            /**
      
             * Return the value specifying the text alignment or policy that was set with
      
             * {@link #setTextAlignment(int)}.
      
             *
      
             * @return the defined text alignment. It can be one of:
      
             *
      
             * {@link #TEXT_ALIGNMENT_INHERIT},
      
             * {@link #TEXT_ALIGNMENT_GRAVITY},
      
             * {@link #TEXT_ALIGNMENT_CENTER},
      
             * {@link #TEXT_ALIGNMENT_TEXT_START},
      
             * {@link #TEXT_ALIGNMENT_TEXT_END},
      
             * {@link #TEXT_ALIGNMENT_VIEW_START},
      
             * {@link #TEXT_ALIGNMENT_VIEW_END}
      
             *
      
             * @attr ref android.R.styleable#View_textAlignment
      
             *
      
             * @hide
      
             */
      
            @ViewDebug.ExportedProperty(category = "text", mapping = {
      
                    @ViewDebug.IntToString(from = TEXT_ALIGNMENT_INHERIT, to = "INHERIT"),
      
                    @ViewDebug.IntToString(from = TEXT_ALIGNMENT_GRAVITY, to = "GRAVITY"),
      
                    @ViewDebug.IntToString(from = TEXT_ALIGNMENT_TEXT_START, to = "TEXT_START"),
      
                    @ViewDebug.IntToString(from = TEXT_ALIGNMENT_TEXT_END, to = "TEXT_END"),
      
                    @ViewDebug.IntToString(from = TEXT_ALIGNMENT_CENTER, to = "CENTER"),
      
                    @ViewDebug.IntToString(from = TEXT_ALIGNMENT_VIEW_START, to = "VIEW_START"),
      
                    @ViewDebug.IntToString(from = TEXT_ALIGNMENT_VIEW_END, to = "VIEW_END")
      
            })
      
            @TextAlignment
      
            public int getRawTextAlignment() {
      
                return (mPrivateFlags2 & PFLAG2_TEXT_ALIGNMENT_MASK) >> PFLAG2_TEXT_ALIGNMENT_MASK_SHIFT;
      
            }
      
            /**
      
             * Set the text alignment.
      
             *
      
             * @param textAlignment The text alignment to set. Should be one of
      
             *
      
             * {@link #TEXT_ALIGNMENT_INHERIT},
      
             * {@link #TEXT_ALIGNMENT_GRAVITY},
      
             * {@link #TEXT_ALIGNMENT_CENTER},
      
             * {@link #TEXT_ALIGNMENT_TEXT_START},
      
             * {@link #TEXT_ALIGNMENT_TEXT_END},
      
             * {@link #TEXT_ALIGNMENT_VIEW_START},
      
             * {@link #TEXT_ALIGNMENT_VIEW_END}
      
             *
      
             * Resolution will be done if the value is set to TEXT_ALIGNMENT_INHERIT. The resolution
      
             * proceeds up the parent chain of the view to get the value. If there is no parent, then it
      
             * will return the default {@link #TEXT_ALIGNMENT_GRAVITY}.
      
             *
      
             * @attr ref android.R.styleable#View_textAlignment
      
             */
      
            public void setTextAlignment(@TextAlignment int textAlignment) {
      
                if (textAlignment != getRawTextAlignment()) {
      
                    // Reset the current and resolved text alignment
      
                    mPrivateFlags2 &= ~PFLAG2_TEXT_ALIGNMENT_MASK;
      
                    resetResolvedTextAlignment();
      
                    // Set the new text alignment
      
                    mPrivateFlags2 |=
      
                            ((textAlignment << PFLAG2_TEXT_ALIGNMENT_MASK_SHIFT) & PFLAG2_TEXT_ALIGNMENT_MASK);
      
                    // Do resolution
      
                    resolveTextAlignment();
      
                    // Notify change
      
                    onRtlPropertiesChanged(getLayoutDirection());
      
                    // Refresh
      
                    requestLayout();
      
                    invalidate(true);
      
                }
      
            }
      
            /**
      
             * Return the resolved text alignment.
      
             *
      
             * @return the resolved text alignment. Returns one of:
      
             *
      
             * {@link #TEXT_ALIGNMENT_GRAVITY},
      
             * {@link #TEXT_ALIGNMENT_CENTER},
      
             * {@link #TEXT_ALIGNMENT_TEXT_START},
      
             * {@link #TEXT_ALIGNMENT_TEXT_END},
      
             * {@link #TEXT_ALIGNMENT_VIEW_START},
      
             * {@link #TEXT_ALIGNMENT_VIEW_END}
      
             *
      
             * @attr ref android.R.styleable#View_textAlignment
      
             */
      
            @ViewDebug.ExportedProperty(category = "text", mapping = {
      
                    @ViewDebug.IntToString(from = TEXT_ALIGNMENT_INHERIT, to = "INHERIT"),
      
                    @ViewDebug.IntToString(from = TEXT_ALIGNMENT_GRAVITY, to = "GRAVITY"),
      
                    @ViewDebug.IntToString(from = TEXT_ALIGNMENT_TEXT_START, to = "TEXT_START"),
      
                    @ViewDebug.IntToString(from = TEXT_ALIGNMENT_TEXT_END, to = "TEXT_END"),
      
                    @ViewDebug.IntToString(from = TEXT_ALIGNMENT_CENTER, to = "CENTER"),
      
                    @ViewDebug.IntToString(from = TEXT_ALIGNMENT_VIEW_START, to = "VIEW_START"),
      
                    @ViewDebug.IntToString(from = TEXT_ALIGNMENT_VIEW_END, to = "VIEW_END")
      
            })
      
            @TextAlignment
      
            public int getTextAlignment() {
      
                return (mPrivateFlags2 & PFLAG2_TEXT_ALIGNMENT_RESOLVED_MASK) >>
      
                        PFLAG2_TEXT_ALIGNMENT_RESOLVED_MASK_SHIFT;
      
            }
      
            /**
      
             * Resolve the text alignment.
      
             *
      
             * @return true if resolution has been done, false otherwise.
      
             *
      
             * @hide
      
             */
      
            public boolean resolveTextAlignment() {
      
                // Reset any previous text alignment resolution
      
                mPrivateFlags2 &= ~(PFLAG2_TEXT_ALIGNMENT_RESOLVED | PFLAG2_TEXT_ALIGNMENT_RESOLVED_MASK);
      
                if (hasRtlSupport()) {
      
                    // Set resolved text alignment flag depending on text alignment flag
      
                    final int textAlignment = getRawTextAlignment();
      
                    switch (textAlignment) {
      
                        case TEXT_ALIGNMENT_INHERIT:
      
                            // Check if we can resolve the text alignment
      
                            if (!canResolveTextAlignment()) {
      
                                // We cannot do the resolution if there is no parent so use the default
      
                                mPrivateFlags2 |= PFLAG2_TEXT_ALIGNMENT_RESOLVED_DEFAULT;
      
                                // Resolution will need to happen again later
      
                                return false;
      
                            }
      
                            // Parent has not yet resolved, so we still return the default
      
                            try {
      
                                if (!mParent.isTextAlignmentResolved()) {
      
                                    mPrivateFlags2 |= PFLAG2_TEXT_ALIGNMENT_RESOLVED_DEFAULT;
      
                                    // Resolution will need to happen again later
      
                                    return false;
      
                                }
      
                            } catch (AbstractMethodError e) {
      
                                Log.e(VIEW_LOG_TAG, mParent.getClass().getSimpleName() +
      
                                        " does not fully implement ViewParent", e);
      
                                mPrivateFlags2 |= PFLAG2_TEXT_ALIGNMENT_RESOLVED |
      
                                        PFLAG2_TEXT_ALIGNMENT_RESOLVED_DEFAULT;
      
                                return true;
      
                            }
      
                            int parentResolvedTextAlignment;
      
                            try {
      
                                parentResolvedTextAlignment = mParent.getTextAlignment();
      
                            } catch (AbstractMethodError e) {
      
                                Log.e(VIEW_LOG_TAG, mParent.getClass().getSimpleName() +
      
                                        " does not fully implement ViewParent", e);
      
                                parentResolvedTextAlignment = TEXT_ALIGNMENT_GRAVITY;
      
                            }
      
                            switch (parentResolvedTextAlignment) {
      
                                case TEXT_ALIGNMENT_GRAVITY:
      
                                case TEXT_ALIGNMENT_TEXT_START:
      
                                case TEXT_ALIGNMENT_TEXT_END:
      
                                case TEXT_ALIGNMENT_CENTER:
      
                                case TEXT_ALIGNMENT_VIEW_START:
      
                                case TEXT_ALIGNMENT_VIEW_END:
      
                                    // Resolved text alignment is the same as the parent resolved
      
                                    // text alignment
      
                                    mPrivateFlags2 |=
      
                                            (parentResolvedTextAlignment << PFLAG2_TEXT_ALIGNMENT_RESOLVED_MASK_SHIFT);
      
                                    break;
      
                                default:
      
                                    // Use default resolved text alignment
      
                                    mPrivateFlags2 |= PFLAG2_TEXT_ALIGNMENT_RESOLVED_DEFAULT;
      
                            }
      
                            break;
      
                        case TEXT_ALIGNMENT_GRAVITY:
      
                        case TEXT_ALIGNMENT_TEXT_START:
      
                        case TEXT_ALIGNMENT_TEXT_END:
      
                        case TEXT_ALIGNMENT_CENTER:
      
                        case TEXT_ALIGNMENT_VIEW_START:
      
                        case TEXT_ALIGNMENT_VIEW_END:
      
                            // Resolved text alignment is the same as text alignment
      
                            mPrivateFlags2 |= (textAlignment << PFLAG2_TEXT_ALIGNMENT_RESOLVED_MASK_SHIFT);
      
                            break;
      
                        default:
      
                            // Use default resolved text alignment
      
                            mPrivateFlags2 |= PFLAG2_TEXT_ALIGNMENT_RESOLVED_DEFAULT;
      
                    }
      
                } else {
      
                    // Use default resolved text alignment
      
                    mPrivateFlags2 |= PFLAG2_TEXT_ALIGNMENT_RESOLVED_DEFAULT;
      
                }
      
                // Set the resolved
      
                mPrivateFlags2 |= PFLAG2_TEXT_ALIGNMENT_RESOLVED;
      
                return true;
      
            }
      
            /**
      
             * Check if text alignment resolution can be done.
      
             *
      
             * @return true if text alignment resolution can be done otherwise return false.
      
             */
      
            public boolean canResolveTextAlignment() {
      
                switch (getRawTextAlignment()) {
      
                    case TEXT_DIRECTION_INHERIT:
      
                        if (mParent != null) {
      
                            try {
      
                                return mParent.canResolveTextAlignment();
      
                            } catch (AbstractMethodError e) {
      
                                Log.e(VIEW_LOG_TAG, mParent.getClass().getSimpleName() +
      
                                        " does not fully implement ViewParent", e);
      
                            }
      
                        }
      
                        return false;
      
                    default:
      
                        return true;
      
                }
      
            }
      
            /**
      
             * Reset resolved text alignment. Text alignment will be resolved during a call to
      
             * {@link #onMeasure(int, int)}.
      
             *
      
             * @hide
      
             */
      
            public void resetResolvedTextAlignment() {
      
                // Reset any previous text alignment resolution
      
                mPrivateFlags2 &= ~(PFLAG2_TEXT_ALIGNMENT_RESOLVED | PFLAG2_TEXT_ALIGNMENT_RESOLVED_MASK);
      
                // Set to default
      
                mPrivateFlags2 |= PFLAG2_TEXT_ALIGNMENT_RESOLVED_DEFAULT;
      
            }
      
            /**
      
             * @return true if text alignment is inherited.
      
             *
      
             * @hide
      
             */
      
            public boolean isTextAlignmentInherited() {
      
                return (getRawTextAlignment() == TEXT_ALIGNMENT_INHERIT);
      
            }
      
            /**
      
             * @return true if text alignment is resolved.
      
             */
      
            public boolean isTextAlignmentResolved() {
      
                return (mPrivateFlags2 & PFLAG2_TEXT_ALIGNMENT_RESOLVED) == PFLAG2_TEXT_ALIGNMENT_RESOLVED;
      
            }
      
            /**
      
             * Generate a value suitable for use in {@link #setId(int)}.
      
             * This value will not collide with ID values generated at build time by aapt for R.id.
      
             *
      
             * @return a generated ID value
      
             */
      
            public static int generateViewId() {
      
                for (;;) {
      
                    final int result = sNextGeneratedId.get();
      
                    // aapt-generated IDs have the high byte nonzero; clamp to the range under that.
      
                    int newValue = result + 1;
      
                    if (newValue > 0x00FFFFFF) newValue = 1; // Roll over to 1, not 0.
      
                    if (sNextGeneratedId.compareAndSet(result, newValue)) {
      
                        return result;
      
                    }
      
                }
      
            }
      
            /**
      
             * Gets the Views in the hierarchy affected by entering and exiting Activity Scene transitions.
      
             * @param transitioningViews This View will be added to transitioningViews if it is VISIBLE and
      
             *                           a normal View or a ViewGroup with
      
             *                           {@link android.view.ViewGroup#isTransitionGroup()} true.
      
             * @hide
      
             */
      
            public void captureTransitioningViews(List<View> transitioningViews) {
      
                if (getVisibility() == View.VISIBLE) {
      
                    transitioningViews.add(this);
      
                }
      
            }
      
            /**
      
             * Adds all Views that have {@link #getTransitionName()} non-null to namedElements.
      
             * @param namedElements Will contain all Views in the hierarchy having a transitionName.
      
             * @hide
      
             */
      
            public void findNamedViews(Map<String, View> namedElements) {
      
                if (getVisibility() == VISIBLE || mGhostView != null) {
      
                    String transitionName = getTransitionName();
      
                    if (transitionName != null) {
      
                        namedElements.put(transitionName, this);
      
                    }
      
                }
      
            }
      
            //
      
            // Properties
      
            //
      
            /**
      
             * A Property wrapper around the <code>alpha</code> functionality handled by the
      
             * {@link View#setAlpha(float)} and {@link View#getAlpha()} methods.
      
             */
      
            public static final Property<View, Float> ALPHA = new FloatProperty<View>("alpha") {
      
                @Override
      
                public void setValue(View object, float value) {
      
                    object.setAlpha(value);
      
                }
      
                @Override
      
                public Float get(View object) {
      
                    return object.getAlpha();
      
                }
      
            };
      
            /**
      
             * A Property wrapper around the <code>translationX</code> functionality handled by the
      
             * {@link View#setTranslationX(float)} and {@link View#getTranslationX()} methods.
      
             */
      
            public static final Property<View, Float> TRANSLATION_X = new FloatProperty<View>("translationX") {
      
                @Override
      
                public void setValue(View object, float value) {
      
                    object.setTranslationX(value);
      
                }
      
                        @Override
      
                public Float get(View object) {
      
                    return object.getTranslationX();
      
                }
      
            };
      
            /**
      
             * A Property wrapper around the <code>translationY</code> functionality handled by the
      
             * {@link View#setTranslationY(float)} and {@link View#getTranslationY()} methods.
      
             */
      
            public static final Property<View, Float> TRANSLATION_Y = new FloatProperty<View>("translationY") {
      
                @Override
      
                public void setValue(View object, float value) {
      
                    object.setTranslationY(value);
      
                }
      
                @Override
      
                public Float get(View object) {
      
                    return object.getTranslationY();
      
                }
      
            };
      
            /**
      
             * A Property wrapper around the <code>translationZ</code> functionality handled by the
      
             * {@link View#setTranslationZ(float)} and {@link View#getTranslationZ()} methods.
      
             */
      
            public static final Property<View, Float> TRANSLATION_Z = new FloatProperty<View>("translationZ") {
      
                @Override
      
                public void setValue(View object, float value) {
      
                    object.setTranslationZ(value);
      
                }
      
                @Override
      
                public Float get(View object) {
      
                    return object.getTranslationZ();
      
                }
      
            };
      
            /**
      
             * A Property wrapper around the <code>x</code> functionality handled by the
      
             * {@link View#setX(float)} and {@link View#getX()} methods.
      
             */
      
            public static final Property<View, Float> X = new FloatProperty<View>("x") {
      
                @Override
      
                public void setValue(View object, float value) {
      
                    object.setX(value);
      
                }
      
                @Override
      
                public Float get(View object) {
      
                    return object.getX();
      
                }
      
            };
      
            /**
      
             * A Property wrapper around the <code>y</code> functionality handled by the
      
             * {@link View#setY(float)} and {@link View#getY()} methods.
      
             */
      
            public static final Property<View, Float> Y = new FloatProperty<View>("y") {
      
                @Override
      
                public void setValue(View object, float value) {
      
                    object.setY(value);
      
                }
      
                @Override
      
                public Float get(View object) {
      
                    return object.getY();
      
                }
      
            };
      
            /**
      
             * A Property wrapper around the <code>z</code> functionality handled by the
      
             * {@link View#setZ(float)} and {@link View#getZ()} methods.
      
             */
      
            public static final Property<View, Float> Z = new FloatProperty<View>("z") {
      
                @Override
      
                public void setValue(View object, float value) {
      
                    object.setZ(value);
      
                }
      
                @Override
      
                public Float get(View object) {
      
                    return object.getZ();
      
                }
      
            };
      
            /**
      
             * A Property wrapper around the <code>rotation</code> functionality handled by the
      
             * {@link View#setRotation(float)} and {@link View#getRotation()} methods.
      
             */
      
            public static final Property<View, Float> ROTATION = new FloatProperty<View>("rotation") {
      
                @Override
      
                public void setValue(View object, float value) {
      
                    object.setRotation(value);
      
                }
      
                @Override
      
                public Float get(View object) {
      
                    return object.getRotation();
      
                }
      
            };
      
            /**
      
             * A Property wrapper around the <code>rotationX</code> functionality handled by the
      
             * {@link View#setRotationX(float)} and {@link View#getRotationX()} methods.
      
             */
      
            public static final Property<View, Float> ROTATION_X = new FloatProperty<View>("rotationX") {
      
                @Override
      
                public void setValue(View object, float value) {
      
                    object.setRotationX(value);
      
                }
      
                @Override
      
                public Float get(View object) {
      
                    return object.getRotationX();
      
                }
      
            };
      
            /**
      
             * A Property wrapper around the <code>rotationY</code> functionality handled by the
      
             * {@link View#setRotationY(float)} and {@link View#getRotationY()} methods.
      
             */
      
            public static final Property<View, Float> ROTATION_Y = new FloatProperty<View>("rotationY") {
      
                @Override
      
                public void setValue(View object, float value) {
      
                    object.setRotationY(value);
      
                }
      
                @Override
      
                public Float get(View object) {
      
                    return object.getRotationY();
      
                }
      
            };
      
            /**
      
             * A Property wrapper around the <code>scaleX</code> functionality handled by the
      
             * {@link View#setScaleX(float)} and {@link View#getScaleX()} methods.
      
             */
      
            public static final Property<View, Float> SCALE_X = new FloatProperty<View>("scaleX") {
      
                @Override
      
                public void setValue(View object, float value) {
      
                    object.setScaleX(value);
      
                }
      
                @Override
      
                public Float get(View object) {
      
                    return object.getScaleX();
      
                }
      
            };
      
            /**
      
             * A Property wrapper around the <code>scaleY</code> functionality handled by the
      
             * {@link View#setScaleY(float)} and {@link View#getScaleY()} methods.
      
             */
      
            public static final Property<View, Float> SCALE_Y = new FloatProperty<View>("scaleY") {
      
                @Override
      
                public void setValue(View object, float value) {
      
                    object.setScaleY(value);
      
                }
      
                @Override
      
                public Float get(View object) {
      
                    return object.getScaleY();
      
                }
      
            };
      
            /**
      
             * A MeasureSpec encapsulates the layout requirements passed from parent to child.
      
             * Each MeasureSpec represents a requirement for either the width or the height.
      
             * A MeasureSpec is comprised of a size and a mode. There are three possible
      
             * modes:
      
             * <dl>
      
             * <dt>UNSPECIFIED</dt>
      
             * <dd>
      
             * The parent has not imposed any constraint on the child. It can be whatever size
      
             * it wants.
      
             * </dd>
      
             *
      
             * <dt>EXACTLY</dt>
      
             * <dd>
      
             * The parent has determined an exact size for the child. The child is going to be
      
             * given those bounds regardless of how big it wants to be.
      
             * </dd>
      
             *
      
             * <dt>AT_MOST</dt>
      
             * <dd>
      
             * The child can be as large as it wants up to the specified size.
      
             * </dd>
      
             * </dl>
      
             *
      
             * MeasureSpecs are implemented as ints to reduce object allocation. This class
      
             * is provided to pack and unpack the &lt;size, mode&gt; tuple into the int.
      
             */
      
            public static class MeasureSpec {
      
                private static final int MODE_SHIFT = 30;
      
                private static final int MODE_MASK  = 0x3 << MODE_SHIFT;
      
                /**
      
                 * Measure specification mode: The parent has not imposed any constraint
      
                 * on the child. It can be whatever size it wants.
      
                 */
      
                public static final int UNSPECIFIED = 0 << MODE_SHIFT;
      
                /**
      
                 * Measure specification mode: The parent has determined an exact size
      
                 * for the child. The child is going to be given those bounds regardless
      
                 * of how big it wants to be.
      
                 */
      
                public static final int EXACTLY     = 1 << MODE_SHIFT;
      
                /**
      
                 * Measure specification mode: The child can be as large as it wants up
      
                 * to the specified size.
      
                 */
      
                public static final int AT_MOST     = 2 << MODE_SHIFT;
      
                /**
      
                 * Creates a measure specification based on the supplied size and mode.
      
                 *
      
                 * The mode must always be one of the following:
      
                 * <ul>
      
                 *  <li>{@link android.view.View.MeasureSpec#UNSPECIFIED}</li>
      
                 *  <li>{@link android.view.View.MeasureSpec#EXACTLY}</li>
      
                 *  <li>{@link android.view.View.MeasureSpec#AT_MOST}</li>
      
                 * </ul>
      
                 *
      
                 * <p><strong>Note:</strong> On API level 17 and lower, makeMeasureSpec's
      
                 * implementation was such that the order of arguments did not matter
      
                 * and overflow in either value could impact the resulting MeasureSpec.
      
                 * {@link android.widget.RelativeLayout} was affected by this bug.
      
                 * Apps targeting API levels greater than 17 will get the fixed, more strict
      
                 * behavior.</p>
      
                 *
      
                 * @param size the size of the measure specification
      
                 * @param mode the mode of the measure specification
      
                 * @return the measure specification based on size and mode
      
                 */
      
                public static int makeMeasureSpec(int size, int mode) {
      
                    if (sUseBrokenMakeMeasureSpec) {
      
                        return size + mode;
      
                    } else {
      
                        return (size & ~MODE_MASK) | (mode & MODE_MASK);
      
                    }
      
                }
      
                /**
      
                 * Like {@link #makeMeasureSpec(int, int)}, but any spec with a mode of UNSPECIFIED
      
                 * will automatically get a size of 0. Older apps expect this.
      
                 *
      
                 * @hide internal use only for compatibility with system widgets and older apps
      
                 */
      
                public static int makeSafeMeasureSpec(int size, int mode) {
      
                    if (sUseZeroUnspecifiedMeasureSpec && mode == UNSPECIFIED) {
      
                        return 0;
      
                    }
      
                    return makeMeasureSpec(size, mode);
      
                }
      
                /**
      
                 * Extracts the mode from the supplied measure specification.
      
                 *
      
                 * @param measureSpec the measure specification to extract the mode from
      
                 * @return {@link android.view.View.MeasureSpec#UNSPECIFIED},
      
                 *         {@link android.view.View.MeasureSpec#AT_MOST} or
      
                 *         {@link android.view.View.MeasureSpec#EXACTLY}
      
                 */
      
                public static int getMode(int measureSpec) {
      
                    return (measureSpec & MODE_MASK);
      
                }
      
                /**
      
                 * Extracts the size from the supplied measure specification.
      
                 *
      
                 * @param measureSpec the measure specification to extract the size from
      
                 * @return the size in pixels defined in the supplied measure specification
      
                 */
      
                public static int getSize(int measureSpec) {
      
                    return (measureSpec & ~MODE_MASK);
      
                }
      
                static int adjust(int measureSpec, int delta) {
      
                    final int mode = getMode(measureSpec);
      
                    int size = getSize(measureSpec);
      
                    if (mode == UNSPECIFIED) {
      
                        // No need to adjust size for UNSPECIFIED mode.
      
                        return makeMeasureSpec(size, UNSPECIFIED);
      
                    }
      
                    size += delta;
      
                    if (size < 0) {
      
                        Log.e(VIEW_LOG_TAG, "MeasureSpec.adjust: new size would be negative! (" + size +
      
                                ") spec: " + toString(measureSpec) + " delta: " + delta);
      
                        size = 0;
      
                    }
      
                    return makeMeasureSpec(size, mode);
      
                }
      
                /**
      
                 * Returns a String representation of the specified measure
      
                 * specification.
      
                 *
      
                 * @param measureSpec the measure specification to convert to a String
      
                 * @return a String with the following format: "MeasureSpec: MODE SIZE"
      
                 */
      
                public static String toString(int measureSpec) {
      
                    int mode = getMode(measureSpec);
      
                    int size = getSize(measureSpec);
      
                    StringBuilder sb = new StringBuilder("MeasureSpec: ");
      
                    if (mode == UNSPECIFIED)
      
                        sb.append("UNSPECIFIED ");
      
                    else if (mode == EXACTLY)
      
                        sb.append("EXACTLY ");
      
                    else if (mode == AT_MOST)
      
                        sb.append("AT_MOST ");
      
                    else
      
                        sb.append(mode).append(" ");
      
                    sb.append(size);
      
                    return sb.toString();
      
                }
      
            }
      
            private final class CheckForLongPress implements Runnable {
      
                private int mOriginalWindowAttachCount;
      
                @Override
      
                public void run() {
      
                    if (isPressed() && (mParent != null)
      
                            && mOriginalWindowAttachCount == mWindowAttachCount) {
      
                        if (performLongClick()) {
      
                            mHasPerformedLongPress = true;
      
                        }
      
                    }
      
                }
      
                public void rememberWindowAttachCount() {
      
                    mOriginalWindowAttachCount = mWindowAttachCount;
      
                }
      
            }
      
            private final class CheckForTap implements Runnable {
      
                public float x;
      
                public float y;
      
                @Override
      
                public void run() {
      
                    mPrivateFlags &= ~PFLAG_PREPRESSED;
      
                    setPressed(true, x, y);
      
                    checkForLongClick(ViewConfiguration.getTapTimeout());
      
                }
      
            }
      
            private final class PerformClick implements Runnable {
      
                @Override
      
                public void run() {
      
                    performClick();
      
                }
      
            }
      
            /** @hide */
      
            public void hackTurnOffWindowResizeAnim(boolean off) {
      
                mAttachInfo.mTurnOffWindowResizeAnim = off;
      
            }
      
            /**
      
             * This method returns a ViewPropertyAnimator object, which can be used to animate
      
             * specific properties on this View.
      
             *
      
             * @return ViewPropertyAnimator The ViewPropertyAnimator associated with this View.
      
             */
      
            public ViewPropertyAnimator animate() {
      
                if (mAnimator == null) {
      
                    mAnimator = new ViewPropertyAnimator(this);
      
                }
      
                return mAnimator;
      
            }
      
            /**
      
             * Sets the name of the View to be used to identify Views in Transitions.
      
             * Names should be unique in the View hierarchy.
      
             *
      
             * @param transitionName The name of the View to uniquely identify it for Transitions.
      
             */
      
            public final void setTransitionName(String transitionName) {
      
                mTransitionName = transitionName;
      
            }
      
            /**
      
             * Returns the name of the View to be used to identify Views in Transitions.
      
             * Names should be unique in the View hierarchy.
      
             *
      
             * <p>This returns null if the View has not been given a name.</p>
      
             *
      
             * @return The name used of the View to be used to identify Views in Transitions or null
      
             * if no name has been given.
      
             */
      
            @ViewDebug.ExportedProperty
      
            public String getTransitionName() {
      
                return mTransitionName;
      
            }
      
            /**
      
             * Interface definition for a callback to be invoked when a hardware key event is
      
             * dispatched to this view. The callback will be invoked before the key event is
      
             * given to the view. This is only useful for hardware keyboards; a software input
      
             * method has no obligation to trigger this listener.
      
             */
      
            public interface OnKeyListener {
      
                /**
      
                 * Called when a hardware key is dispatched to a view. This allows listeners to
      
                 * get a chance to respond before the target view.
      
                 * <p>Key presses in software keyboards will generally NOT trigger this method,
      
                 * although some may elect to do so in some situations. Do not assume a
      
                 * software input method has to be key-based; even if it is, it may use key presses
      
                 * in a different way than you expect, so there is no way to reliably catch soft
      
                 * input key presses.
      
                 *
      
                 * @param v The view the key has been dispatched to.
      
                 * @param keyCode The code for the physical key that was pressed
      
                 * @param event The KeyEvent object containing full information about
      
                 *        the event.
      
                 * @return True if the listener has consumed the event, false otherwise.
      
                 */
      
                boolean onKey(View v, int keyCode, KeyEvent event);
      
            }
      
            /**
      
             * Interface definition for a callback to be invoked when a touch event is
      
             * dispatched to this view. The callback will be invoked before the touch
      
             * event is given to the view.
      
             */
      
            public interface OnTouchListener {
      
                /**
      
                 * Called when a touch event is dispatched to a view. This allows listeners to
      
                 * get a chance to respond before the target view.
      
                 *
      
                 * @param v The view the touch event has been dispatched to.
      
                 * @param event The MotionEvent object containing full information about
      
                 *        the event.
      
                 * @return True if the listener has consumed the event, false otherwise.
      
                 */
      
                boolean onTouch(View v, MotionEvent event);
      
            }
      
            /**
      
             * Interface definition for a callback to be invoked when a hover event is
      
             * dispatched to this view. The callback will be invoked before the hover
      
             * event is given to the view.
      
             */
      
            public interface OnHoverListener {
      
                /**
      
                 * Called when a hover event is dispatched to a view. This allows listeners to
      
                 * get a chance to respond before the target view.
      
                 *
      
                 * @param v The view the hover event has been dispatched to.
      
                 * @param event The MotionEvent object containing full information about
      
                 *        the event.
      
                 * @return True if the listener has consumed the event, false otherwise.
      
                 */
      
                boolean onHover(View v, MotionEvent event);
      
            }
      
            /**
      
             * Interface definition for a callback to be invoked when a generic motion event is
      
             * dispatched to this view. The callback will be invoked before the generic motion
      
             * event is given to the view.
      
             */
      
            public interface OnGenericMotionListener {
      
                /**
      
                 * Called when a generic motion event is dispatched to a view. This allows listeners to
      
                 * get a chance to respond before the target view.
      
                 *
      
                 * @param v The view the generic motion event has been dispatched to.
      
                 * @param event The MotionEvent object containing full information about
      
                 *        the event.
      
                 * @return True if the listener has consumed the event, false otherwise.
      
                 */
      
                boolean onGenericMotion(View v, MotionEvent event);
      
            }
      
            /**
      
             * Interface definition for a callback to be invoked when a view has been clicked and held.
      
             */
      
            public interface OnLongClickListener {
      
                /**
      
                 * Called when a view has been clicked and held.
      
                 *
      
                 * @param v The view that was clicked and held.
      
                 *
      
                 * @return true if the callback consumed the long click, false otherwise.
      
                 */
      
                boolean onLongClick(View v);
      
            }
      
            /**
      
             * Interface definition for a callback to be invoked when a drag is being dispatched
      
             * to this view.  The callback will be invoked before the hosting view's own
      
             * onDrag(event) method.  If the listener wants to fall back to the hosting view's
      
             * onDrag(event) behavior, it should return 'false' from this callback.
      
             *
      
             * <div class="special reference">
      
             * <h3>Developer Guides</h3>
      
             * <p>For a guide to implementing drag and drop features, read the
      
             * <a href="{@docRoot}guide/topics/ui/drag-drop.html">Drag and Drop</a> developer guide.</p>
      
             * </div>
      
             */
      
            public interface OnDragListener {
      
                /**
      
                 * Called when a drag event is dispatched to a view. This allows listeners
      
                 * to get a chance to override base View behavior.
      
                 *
      
                 * @param v The View that received the drag event.
      
                 * @param event The {@link android.view.DragEvent} object for the drag event.
      
                 * @return {@code true} if the drag event was handled successfully, or {@code false}
      
                 * if the drag event was not handled. Note that {@code false} will trigger the View
      
                 * to call its {@link #onDragEvent(DragEvent) onDragEvent()} handler.
      
                 */
      
                boolean onDrag(View v, DragEvent event);
      
            }
      
            /**
      
             * Interface definition for a callback to be invoked when the focus state of
      
             * a view changed.
      
             */
      
            public interface OnFocusChangeListener {
      
                /**
      
                 * Called when the focus state of a view has changed.
      
                 *
      
                 * @param v The view whose state has changed.
      
                 * @param hasFocus The new focus state of v.
      
                 */
      
                void onFocusChange(View v, boolean hasFocus);
      
            }
      
            /**
      
             * Interface definition for a callback to be invoked when a view is clicked.
      
             */
      
            public interface OnClickListener {
      
                /**
      
                 * Called when a view has been clicked.
      
                 *
      
                 * @param v The view that was clicked.
      
                 */
      
                void onClick(View v);
      
            }
      
            /**
      
             * Interface definition for a callback to be invoked when a view is context clicked.
      
             */
      
            public interface OnContextClickListener {
      
                /**
      
                 * Called when a view is context clicked.
      
                 *
      
                 * @param v The view that has been context clicked.
      
                 * @return true if the callback consumed the context click, false otherwise.
      
                 */
      
                boolean onContextClick(View v);
      
            }
      
            /**
      
             * Interface definition for a callback to be invoked when the context menu
      
             * for this view is being built.
      
             */
      
            public interface OnCreateContextMenuListener {
      
                /**
      
                 * Called when the context menu for this view is being built. It is not
      
                 * safe to hold onto the menu after this method returns.
      
                 *
      
                 * @param menu The context menu that is being built
      
                 * @param v The view for which the context menu is being built
      
                 * @param menuInfo Extra information about the item for which the
      
                 *            context menu should be shown. This information will vary
      
                 *            depending on the class of v.
      
                 */
      
                void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo);
      
            }
      
            /**
      
             * Interface definition for a callback to be invoked when the status bar changes
      
             * visibility.  This reports <strong>global</strong> changes to the system UI
      
             * state, not what the application is requesting.
      
             *
      
             * @see View#setOnSystemUiVisibilityChangeListener(android.view.View.OnSystemUiVisibilityChangeListener)
      
             */
      
            public interface OnSystemUiVisibilityChangeListener {
      
                /**
      
                 * Called when the status bar changes visibility because of a call to
      
                 * {@link View#setSystemUiVisibility(int)}.
      
                 *
      
                 * @param visibility  Bitwise-or of flags {@link #SYSTEM_UI_FLAG_LOW_PROFILE},
      
                 * {@link #SYSTEM_UI_FLAG_HIDE_NAVIGATION}, and {@link #SYSTEM_UI_FLAG_FULLSCREEN}.
      
                 * This tells you the <strong>global</strong> state of these UI visibility
      
                 * flags, not what your app is currently applying.
      
                 */
      
                public void onSystemUiVisibilityChange(int visibility);
      
            }
      
            /**
      
             * Interface definition for a callback to be invoked when this view is attached
      
             * or detached from its window.
      
             */
      
            public interface OnAttachStateChangeListener {
      
                /**
      
                 * Called when the view is attached to a window.
      
                 * @param v The view that was attached
      
                 */
      
                public void onViewAttachedToWindow(View v);
      
                /**
      
                 * Called when the view is detached from a window.
      
                 * @param v The view that was detached
      
                 */
      
                public void onViewDetachedFromWindow(View v);
      
            }
      
            /**
      
             * Listener for applying window insets on a view in a custom way.
      
             *
      
             * <p>Apps may choose to implement this interface if they want to apply custom policy
      
             * to the way that window insets are treated for a view. If an OnApplyWindowInsetsListener
      
             * is set, its
      
             * {@link OnApplyWindowInsetsListener#onApplyWindowInsets(View, WindowInsets) onApplyWindowInsets}
      
             * method will be called instead of the View's own
      
             * {@link #onApplyWindowInsets(WindowInsets) onApplyWindowInsets} method. The listener
      
             * may optionally call the parameter View's <code>onApplyWindowInsets</code> method to apply
      
             * the View's normal behavior as part of its own.</p>
      
             */
      
            public interface OnApplyWindowInsetsListener {
      
                /**
      
                 * When {@link View#setOnApplyWindowInsetsListener(View.OnApplyWindowInsetsListener) set}
      
                 * on a View, this listener method will be called instead of the view's own
      
                 * {@link View#onApplyWindowInsets(WindowInsets) onApplyWindowInsets} method.
      
                 *
      
                 * @param v The view applying window insets
      
                 * @param insets The insets to apply
      
                 * @return The insets supplied, minus any insets that were consumed
      
                 */
      
                public WindowInsets onApplyWindowInsets(View v, WindowInsets insets);
      
            }
      
            private final class UnsetPressedState implements Runnable {
      
                @Override
      
                public void run() {
      
                    setPressed(false);
      
                }
      
            }
      
            /**
      
             * Base class for derived classes that want to save and restore their own
      
             * state in {@link android.view.View#onSaveInstanceState()}.
      
             */
      
            public static class BaseSavedState extends AbsSavedState {
      
                String mStartActivityRequestWhoSaved;
      
                /**
      
                 * Constructor used when reading from a parcel. Reads the state of the superclass.
      
                 *
      
                 * @param source
      
                 */
      
                public BaseSavedState(Parcel source) {
      
                    super(source);
      
                    mStartActivityRequestWhoSaved = source.readString();
      
                }
      
                /**
      
                 * Constructor called by derived classes when creating their SavedState objects
      
                 *
      
                 * @param superState The state of the superclass of this view
      
                 */
      
                public BaseSavedState(Parcelable superState) {
      
                    super(superState);
      
                }
      
                @Override
      
                public void writeToParcel(Parcel out, int flags) {
      
                    super.writeToParcel(out, flags);
      
                    out.writeString(mStartActivityRequestWhoSaved);
      
                }
      
                public static final Parcelable.Creator<BaseSavedState> CREATOR =
      
                        new Parcelable.Creator<BaseSavedState>() {
      
                    public BaseSavedState createFromParcel(Parcel in) {
      
                        return new BaseSavedState(in);
      
                    }
      
                    public BaseSavedState[] newArray(int size) {
      
                        return new BaseSavedState[size];
      
                    }
      
                };
      
            }
      
            /**
      
             * A set of information given to a view when it is attached to its parent
      
             * window.
      
             */
      
            final static class AttachInfo {
      
                interface Callbacks {
      
                    void playSoundEffect(int effectId);
      
                    boolean performHapticFeedback(int effectId, boolean always);
      
                }
      
                /**
      
                 * InvalidateInfo is used to post invalidate(int, int, int, int) messages
      
                 * to a Handler. This class contains the target (View) to invalidate and
      
                 * the coordinates of the dirty rectangle.
      
                 *
      
                 * For performance purposes, this class also implements a pool of up to
      
                 * POOL_LIMIT objects that get reused. This reduces memory allocations
      
                 * whenever possible.
      
                 */
      
                static class InvalidateInfo {
      
                    private static final int POOL_LIMIT = 10;
      
                    private static final SynchronizedPool<InvalidateInfo> sPool =
      
                            new SynchronizedPool<InvalidateInfo>(POOL_LIMIT);
      
                    View target;
      
                    int left;
      
                    int top;
      
                    int right;
      
                    int bottom;
      
                    public static InvalidateInfo obtain() {
      
                        InvalidateInfo instance = sPool.acquire();
      
                        return (instance != null) ? instance : new InvalidateInfo();
      
                    }
      
                    public void recycle() {
      
                        target = null;
      
                        sPool.release(this);
      
                    }
      
                }
      
                final IWindowSession mSession;
      
                final IWindow mWindow;
      
                final IBinder mWindowToken;
      
                final Display mDisplay;
      
                final Callbacks mRootCallbacks;
      
                IWindowId mIWindowId;
      
                WindowId mWindowId;
      
                /**
      
                 * The top view of the hierarchy.
      
                 */
      
                View mRootView;
      
                IBinder mPanelParentWindowToken;
      
                boolean mHardwareAccelerated;
      
                boolean mHardwareAccelerationRequested;
      
                HardwareRenderer mHardwareRenderer;
      
                List<RenderNode> mPendingAnimatingRenderNodes;
      
                /**
      
                 * The state of the display to which the window is attached, as reported
      
                 * by {@link Display#getState()}.  Note that the display state constants
      
                 * declared by {@link Display} do not exactly line up with the screen state
      
                 * constants declared by {@link View} (there are more display states than
      
                 * screen states).
      
                 */
      
                int mDisplayState = Display.STATE_UNKNOWN;
      
                /**
      
                 * Scale factor used by the compatibility mode
      
                 */
      
                float mApplicationScale;
      
                /**
      
                 * Indicates whether the application is in compatibility mode
      
                 */
      
                boolean mScalingRequired;
      
                /**
      
                 * If set, ViewRootImpl doesn't use its lame animation for when the window resizes.
      
                 */
      
                boolean mTurnOffWindowResizeAnim;
      
                /**
      
                 * Left position of this view's window
      
                 */
      
                int mWindowLeft;
      
                /**
      
                 * Top position of this view's window
      
                 */
      
                int mWindowTop;
      
                /**
      
                 * Indicates whether views need to use 32-bit drawing caches
      
                 */
      
                boolean mUse32BitDrawingCache;
      
                /**
      
                 * For windows that are full-screen but using insets to layout inside
      
                 * of the screen areas, these are the current insets to appear inside
      
                 * the overscan area of the display.
      
                 */
      
                final Rect mOverscanInsets = new Rect();
      
                /**
      
                 * For windows that are full-screen but using insets to layout inside
      
                 * of the screen decorations, these are the current insets for the
      
                 * content of the window.
      
                 */
      
                final Rect mContentInsets = new Rect();
      
                /**
      
                 * For windows that are full-screen but using insets to layout inside
      
                 * of the screen decorations, these are the current insets for the
      
                 * actual visible parts of the window.
      
                 */
      
                final Rect mVisibleInsets = new Rect();
      
                /**
      
                 * For windows that are full-screen but using insets to layout inside
      
                 * of the screen decorations, these are the current insets for the
      
                 * stable system windows.
      
                 */
      
                final Rect mStableInsets = new Rect();
      
                /**
      
                 * For windows that include areas that are not covered by real surface these are the outsets
      
                 * for real surface.
      
                 */
      
                final Rect mOutsets = new Rect();
      
                /**
      
                 * The internal insets given by this window.  This value is
      
                 * supplied by the client (through
      
                 * {@link ViewTreeObserver.OnComputeInternalInsetsListener}) and will
      
                 * be given to the window manager when changed to be used in laying
      
                 * out windows behind it.
      
                 */
      
                final ViewTreeObserver.InternalInsetsInfo mGivenInternalInsets
      
                        = new ViewTreeObserver.InternalInsetsInfo();
      
                /**
      
                 * Set to true when mGivenInternalInsets is non-empty.
      
                 */
      
                boolean mHasNonEmptyGivenInternalInsets;
      
                /**
      
                 * All views in the window's hierarchy that serve as scroll containers,
      
                 * used to determine if the window can be resized or must be panned
      
                 * to adjust for a soft input area.
      
                 */
      
                final ArrayList<View> mScrollContainers = new ArrayList<View>();
      
                final KeyEvent.DispatcherState mKeyDispatchState
      
                        = new KeyEvent.DispatcherState();
      
                /**
      
                 * Indicates whether the view's window currently has the focus.
      
                 */
      
                boolean mHasWindowFocus;
      
                /**
      
                 * The current visibility of the window.
      
                 */
      
                int mWindowVisibility;
      
                /**
      
                 * Indicates the time at which drawing started to occur.
      
                 */
      
                long mDrawingTime;
      
                /**
      
                 * Indicates whether or not ignoring the DIRTY_MASK flags.
      
                 */
      
                boolean mIgnoreDirtyState;
      
                /**
      
                 * This flag tracks when the mIgnoreDirtyState flag is set during draw(),
      
                 * to avoid clearing that flag prematurely.
      
                 */
      
                boolean mSetIgnoreDirtyState = false;
      
                /**
      
                 * Indicates whether the view's window is currently in touch mode.
      
                 */
      
                boolean mInTouchMode;
      
                /**
      
                 * Indicates whether the view has requested unbuffered input dispatching for the current
      
                 * event stream.
      
                 */
      
                boolean mUnbufferedDispatchRequested;
      
                /**
      
                 * Indicates that ViewAncestor should trigger a global layout change
      
                 * the next time it performs a traversal
      
                 */
      
                boolean mRecomputeGlobalAttributes;
      
                /**
      
                 * Always report new attributes at next traversal.
      
                 */
      
                boolean mForceReportNewAttributes;
      
                /**
      
                 * Set during a traveral if any views want to keep the screen on.
      
                 */
      
                boolean mKeepScreenOn;
      
                /**
      
                 * Bitwise-or of all of the values that views have passed to setSystemUiVisibility().
      
                 */
      
                int mSystemUiVisibility;
      
                /**
      
                 * Hack to force certain system UI visibility flags to be cleared.
      
                 */
      
                int mDisabledSystemUiVisibility;
      
                /**
      
                 * Last global system UI visibility reported by the window manager.
      
                 */
      
                int mGlobalSystemUiVisibility;
      
                /**
      
                 * True if a view in this hierarchy has an OnSystemUiVisibilityChangeListener
      
                 * attached.
      
                 */
      
                boolean mHasSystemUiListeners;
      
                /**
      
                 * Set if the window has requested to extend into the overscan region
      
                 * via WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN.
      
                 */
      
                boolean mOverscanRequested;
      
                /**
      
                 * Set if the visibility of any views has changed.
      
                 */
      
                boolean mViewVisibilityChanged;
      
                /**
      
                 * Set to true if a view has been scrolled.
      
                 */
      
                boolean mViewScrollChanged;
      
                /**
      
                 * Set to true if high contrast mode enabled
      
                 */
      
                boolean mHighContrastText;
      
                /**
      
                 * Global to the view hierarchy used as a temporary for dealing with
      
                 * x/y points in the transparent region computations.
      
                 */
      
                final int[] mTransparentLocation = new int[2];
      
                /**
      
                 * Global to the view hierarchy used as a temporary for dealing with
      
                 * x/y points in the ViewGroup.invalidateChild implementation.
      
                 */
      
                final int[] mInvalidateChildLocation = new int[2];
      
                /**
      
                 * Global to the view hierarchy used as a temporary for dealng with
      
                 * computing absolute on-screen location.
      
                 */
      
                final int[] mTmpLocation = new int[2];
      
                /**
      
                 * Global to the view hierarchy used as a temporary for dealing with
      
                 * x/y location when view is transformed.
      
                 */
      
                final float[] mTmpTransformLocation = new float[2];
      
                /**
      
                 * The view tree observer used to dispatch global events like
      
                 * layout, pre-draw, touch mode change, etc.
      
                 */
      
                final ViewTreeObserver mTreeObserver = new ViewTreeObserver();
      
                /**
      
                 * A Canvas used by the view hierarchy to perform bitmap caching.
      
                 */
      
                Canvas mCanvas;
      
                /**
      
                 * The view root impl.
      
                 */
      
                final ViewRootImpl mViewRootImpl;
      
                /**
      
                 * A Handler supplied by a view's {@link android.view.ViewRootImpl}. This
      
                 * handler can be used to pump events in the UI events queue.
      
                 */
      
                final Handler mHandler;
      
                /**
      
                 * Temporary for use in computing invalidate rectangles while
      
                 * calling up the hierarchy.
      
                 */
      
                final Rect mTmpInvalRect = new Rect();
      
                /**
      
                 * Temporary for use in computing hit areas with transformed views
      
                 */
      
                final RectF mTmpTransformRect = new RectF();
      
                /**
      
                 * Temporary for use in computing hit areas with transformed views
      
                 */
      
                final RectF mTmpTransformRect1 = new RectF();
      
                /**
      
                 * Temporary list of rectanges.
      
                 */
      
                final List<RectF> mTmpRectList = new ArrayList<>();
      
                /**
      
                 * Temporary for use in transforming invalidation rect
      
                 */
      
                final Matrix mTmpMatrix = new Matrix();
      
                /**
      
                 * Temporary for use in transforming invalidation rect
      
                 */
      
                final Transformation mTmpTransformation = new Transformation();
      
                /**
      
                 * Temporary for use in querying outlines from OutlineProviders
      
                 */
      
                final Outline mTmpOutline = new Outline();
      
                /**
      
                 * Temporary list for use in collecting focusable descendents of a view.
      
                 */
      
                final ArrayList<View> mTempArrayList = new ArrayList<View>(24);
      
                /**
      
                 * The id of the window for accessibility purposes.
      
                 */
      
                int mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID;
      
                /**
      
                 * Flags related to accessibility processing.
      
                 *
      
                 * @see AccessibilityNodeInfo#FLAG_INCLUDE_NOT_IMPORTANT_VIEWS
      
                 * @see AccessibilityNodeInfo#FLAG_REPORT_VIEW_IDS
      
                 */
      
                int mAccessibilityFetchFlags;
      
                /**
      
                 * The drawable for highlighting accessibility focus.
      
                 */
      
                Drawable mAccessibilityFocusDrawable;
      
                /**
      
                 * Show where the margins, bounds and layout bounds are for each view.
      
                 */
      
                boolean mDebugLayout = SystemProperties.getBoolean(DEBUG_LAYOUT_PROPERTY, false);
      
                /**
      
                 * Point used to compute visible regions.
      
                 */
      
                final Point mPoint = new Point();
      
                /**
      
                 * Used to track which View originated a requestLayout() call, used when
      
                 * requestLayout() is called during layout.
      
                 */
      
                View mViewRequestingLayout;
      
                /**
      
                 * Creates a new set of attachment information with the specified
      
                 * events handler and thread.
      
                 *
      
                 * @param handler the events handler the view must use
      
                 */
      
                AttachInfo(IWindowSession session, IWindow window, Display display,
      
                        ViewRootImpl viewRootImpl, Handler handler, Callbacks effectPlayer) {
      
                    mSession = session;
      
                    mWindow = window;
      
                    mWindowToken = window.asBinder();
      
                    mDisplay = display;
      
                    mViewRootImpl = viewRootImpl;
      
                    mHandler = handler;
      
                    mRootCallbacks = effectPlayer;
      
                }
      
            }
      
            /**
      
             * <p>ScrollabilityCache holds various fields used by a View when scrolling
      
             * is supported. This avoids keeping too many unused fields in most
      
             * instances of View.</p>
      
             */
      
            private static class ScrollabilityCache implements Runnable {
      
                /**
      
                 * Scrollbars are not visible
      
                 */
      
                public static final int OFF = 0;
      
                /**
      
                 * Scrollbars are visible
      
                 */
      
                public static final int ON = 1;
      
                /**
      
                 * Scrollbars are fading away
      
                 */
      
                public static final int FADING = 2;
      
                public boolean fadeScrollBars;
      
                public int fadingEdgeLength;
      
                public int scrollBarDefaultDelayBeforeFade;
      
                public int scrollBarFadeDuration;
      
                public int scrollBarSize;
      
                public ScrollBarDrawable scrollBar;
      
                public float[] interpolatorValues;
      
                public View host;
      
                public final Paint paint;
      
                public final Matrix matrix;
      
                public Shader shader;
      
                public final Interpolator scrollBarInterpolator = new Interpolator(1, 2);
      
                private static final float[] OPAQUE = { 255 };
      
                private static final float[] TRANSPARENT = { 0.0f };
      
                /**
      
                 * When fading should start. This time moves into the future every time
      
                 * a new scroll happens. Measured based on SystemClock.uptimeMillis()
      
                 */
      
                public long fadeStartTime;
      
                /**
      
                 * The current state of the scrollbars: ON, OFF, or FADING
      
                 */
      
                public int state = OFF;
      
                private int mLastColor;
      
                public ScrollabilityCache(ViewConfiguration configuration, View host) {
      
                    fadingEdgeLength = configuration.getScaledFadingEdgeLength();
      
                    scrollBarSize = configuration.getScaledScrollBarSize();
      
                    scrollBarDefaultDelayBeforeFade = ViewConfiguration.getScrollDefaultDelay();
      
                    scrollBarFadeDuration = ViewConfiguration.getScrollBarFadeDuration();
      
                    paint = new Paint();
      
                    matrix = new Matrix();
      
                    // use use a height of 1, and then wack the matrix each time we
      
                    // actually use it.
      
                    shader = new LinearGradient(0, 0, 0, 1, 0xFF000000, 0, Shader.TileMode.CLAMP);
      
                    paint.setShader(shader);
      
                    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_OUT));
      
                    this.host = host;
      
                }
      
                public void setFadeColor(int color) {
      
                    if (color != mLastColor) {
      
                        mLastColor = color;
      
                        if (color != 0) {
      
                            shader = new LinearGradient(0, 0, 0, 1, color | 0xFF000000,
      
                                    color & 0x00FFFFFF, Shader.TileMode.CLAMP);
      
                            paint.setShader(shader);
      
                            // Restore the default transfer mode (src_over)
      
                            paint.setXfermode(null);
      
                        } else {
      
                            shader = new LinearGradient(0, 0, 0, 1, 0xFF000000, 0, Shader.TileMode.CLAMP);
      
                            paint.setShader(shader);
      
                            paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_OUT));
      
                        }
      
                    }
      
                }
      
                public void run() {
      
                    long now = AnimationUtils.currentAnimationTimeMillis();
      
                    if (now >= fadeStartTime) {
      
                        // the animation fades the scrollbars out by changing
      
                        // the opacity (alpha) from fully opaque to fully
      
                        // transparent
      
                        int nextFrame = (int) now;
      
                        int framesCount = 0;
      
                        Interpolator interpolator = scrollBarInterpolator;
      
                        // Start opaque
      
                        interpolator.setKeyFrame(framesCount++, nextFrame, OPAQUE);
      
                        // End transparent
      
                        nextFrame += scrollBarFadeDuration;
      
                        interpolator.setKeyFrame(framesCount, nextFrame, TRANSPARENT);
      
                        state = FADING;
      
                        // Kick off the fade animation
      
                        host.invalidate(true);
      
                    }
      
                }
      
            }
      
            /**
      
             * Resuable callback for sending
      
             * {@link AccessibilityEvent#TYPE_VIEW_SCROLLED} accessibility event.
      
             */
      
            private class SendViewScrolledAccessibilityEvent implements Runnable {
      
                public volatile boolean mIsPending;
      
                public void run() {
      
                    sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_SCROLLED);
      
                    mIsPending = false;
      
                }
      
            }
      
            /**
      
             * <p>
      
             * This class represents a delegate that can be registered in a {@link View}
      
             * to enhance accessibility support via composition rather via inheritance.
      
             * It is specifically targeted to widget developers that extend basic View
      
             * classes i.e. classes in package android.view, that would like their
      
             * applications to be backwards compatible.
      
             * </p>
      
             * <div class="special reference">
      
             * <h3>Developer Guides</h3>
      
             * <p>For more information about making applications accessible, read the
      
             * <a href="{@docRoot}guide/topics/ui/accessibility/index.html">Accessibility</a>
      
             * developer guide.</p>
      
             * </div>
      
             * <p>
      
             * A scenario in which a developer would like to use an accessibility delegate
      
             * is overriding a method introduced in a later API version then the minimal API
      
             * version supported by the application. For example, the method
      
             * {@link View#onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo)} is not available
      
             * in API version 4 when the accessibility APIs were first introduced. If a
      
             * developer would like his application to run on API version 4 devices (assuming
      
             * all other APIs used by the application are version 4 or lower) and take advantage
      
             * of this method, instead of overriding the method which would break the application's
      
             * backwards compatibility, he can override the corresponding method in this
      
             * delegate and register the delegate in the target View if the API version of
      
             * the system is high enough i.e. the API version is same or higher to the API
      
             * version that introduced
      
             * {@link View#onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo)}.
      
             * </p>
      
             * <p>
      
             * Here is an example implementation:
      
             * </p>
      
             * <code><pre><p>
      
             * if (Build.VERSION.SDK_INT >= 14) {
      
             *     // If the API version is equal of higher than the version in
      
             *     // which onInitializeAccessibilityNodeInfo was introduced we
      
             *     // register a delegate with a customized implementation.
      
             *     View view = findViewById(R.id.view_id);
      
             *     view.setAccessibilityDelegate(new AccessibilityDelegate() {
      
             *         public void onInitializeAccessibilityNodeInfo(View host,
      
             *                 AccessibilityNodeInfo info) {
      
             *             // Let the default implementation populate the info.
      
             *             super.onInitializeAccessibilityNodeInfo(host, info);
      
             *             // Set some other information.
      
             *             info.setEnabled(host.isEnabled());
      
             *         }
      
             *     });
      
             * }
      
             * </code></pre></p>
      
             * <p>
      
             * This delegate contains methods that correspond to the accessibility methods
      
             * in View. If a delegate has been specified the implementation in View hands
      
             * off handling to the corresponding method in this delegate. The default
      
             * implementation the delegate methods behaves exactly as the corresponding
      
             * method in View for the case of no accessibility delegate been set. Hence,
      
             * to customize the behavior of a View method, clients can override only the
      
             * corresponding delegate method without altering the behavior of the rest
      
             * accessibility related methods of the host view.
      
             * </p>
      
             */
      
            public static class AccessibilityDelegate {
      
                /**
      
                 * Sends an accessibility event of the given type. If accessibility is not
      
                 * enabled this method has no effect.
      
                 * <p>
      
                 * The default implementation behaves as {@link View#sendAccessibilityEvent(int)
      
                 *  View#sendAccessibilityEvent(int)} for the case of no accessibility delegate
      
                 * been set.
      
                 * </p>
      
                 *
      
                 * @param host The View hosting the delegate.
      
                 * @param eventType The type of the event to send.
      
                 *
      
                 * @see View#sendAccessibilityEvent(int) View#sendAccessibilityEvent(int)
      
                 */
      
                public void sendAccessibilityEvent(View host, int eventType) {
      
                    host.sendAccessibilityEventInternal(eventType);
      
                }
      
                /**
      
                 * Performs the specified accessibility action on the view. For
      
                 * possible accessibility actions look at {@link AccessibilityNodeInfo}.
      
                 * <p>
      
                 * The default implementation behaves as
      
                 * {@link View#performAccessibilityAction(int, Bundle)
      
                 *  View#performAccessibilityAction(int, Bundle)} for the case of
      
                 *  no accessibility delegate been set.
      
                 * </p>
      
                 *
      
                 * @param action The action to perform.
      
                 * @return Whether the action was performed.
      
                 *
      
                 * @see View#performAccessibilityAction(int, Bundle)
      
                 *      View#performAccessibilityAction(int, Bundle)
      
                 */
      
                public boolean performAccessibilityAction(View host, int action, Bundle args) {
      
                    return host.performAccessibilityActionInternal(action, args);
      
                }
      
                /**
      
                 * Sends an accessibility event. This method behaves exactly as
      
                 * {@link #sendAccessibilityEvent(View, int)} but takes as an argument an
      
                 * empty {@link AccessibilityEvent} and does not perform a check whether
      
                 * accessibility is enabled.
      
                 * <p>
      
                 * The default implementation behaves as
      
                 * {@link View#sendAccessibilityEventUnchecked(AccessibilityEvent)
      
                 *  View#sendAccessibilityEventUnchecked(AccessibilityEvent)} for
      
                 * the case of no accessibility delegate been set.
      
                 * </p>
      
                 *
      
                 * @param host The View hosting the delegate.
      
                 * @param event The event to send.
      
                 *
      
                 * @see View#sendAccessibilityEventUnchecked(AccessibilityEvent)
      
                 *      View#sendAccessibilityEventUnchecked(AccessibilityEvent)
      
                 */
      
                public void sendAccessibilityEventUnchecked(View host, AccessibilityEvent event) {
      
                    host.sendAccessibilityEventUncheckedInternal(event);
      
                }
      
                /**
      
                 * Dispatches an {@link AccessibilityEvent} to the host {@link View} first and then
      
                 * to its children for adding their text content to the event.
      
                 * <p>
      
                 * The default implementation behaves as
      
                 * {@link View#dispatchPopulateAccessibilityEvent(AccessibilityEvent)
      
                 *  View#dispatchPopulateAccessibilityEvent(AccessibilityEvent)} for
      
                 * the case of no accessibility delegate been set.
      
                 * </p>
      
                 *
      
                 * @param host The View hosting the delegate.
      
                 * @param event The event.
      
                 * @return True if the event population was completed.
      
                 *
      
                 * @see View#dispatchPopulateAccessibilityEvent(AccessibilityEvent)
      
                 *      View#dispatchPopulateAccessibilityEvent(AccessibilityEvent)
      
                 */
      
                public boolean dispatchPopulateAccessibilityEvent(View host, AccessibilityEvent event) {
      
                    return host.dispatchPopulateAccessibilityEventInternal(event);
      
                }
      
                /**
      
                 * Gives a chance to the host View to populate the accessibility event with its
      
                 * text content.
      
                 * <p>
      
                 * The default implementation behaves as
      
                 * {@link View#onPopulateAccessibilityEvent(AccessibilityEvent)
      
                 *  View#onPopulateAccessibilityEvent(AccessibilityEvent)} for
      
                 * the case of no accessibility delegate been set.
      
                 * </p>
      
                 *
      
                 * @param host The View hosting the delegate.
      
                 * @param event The accessibility event which to populate.
      
                 *
      
                 * @see View#onPopulateAccessibilityEvent(AccessibilityEvent)
      
                 *      View#onPopulateAccessibilityEvent(AccessibilityEvent)
      
                 */
      
                public void onPopulateAccessibilityEvent(View host, AccessibilityEvent event) {
      
                    host.onPopulateAccessibilityEventInternal(event);
      
                }
      
                /**
      
                 * Initializes an {@link AccessibilityEvent} with information about the
      
                 * the host View which is the event source.
      
                 * <p>
      
                 * The default implementation behaves as
      
                 * {@link View#onInitializeAccessibilityEvent(AccessibilityEvent)
      
                 *  View#onInitializeAccessibilityEvent(AccessibilityEvent)} for
      
                 * the case of no accessibility delegate been set.
      
                 * </p>
      
                 *
      
                 * @param host The View hosting the delegate.
      
                 * @param event The event to initialize.
      
                 *
      
                 * @see View#onInitializeAccessibilityEvent(AccessibilityEvent)
      
                 *      View#onInitializeAccessibilityEvent(AccessibilityEvent)
      
                 */
      
                public void onInitializeAccessibilityEvent(View host, AccessibilityEvent event) {
      
                    host.onInitializeAccessibilityEventInternal(event);
      
                }
      
                /**
      
                 * Initializes an {@link AccessibilityNodeInfo} with information about the host view.
      
                 * <p>
      
                 * The default implementation behaves as
      
                 * {@link View#onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo)
      
                 *  View#onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo)} for
      
                 * the case of no accessibility delegate been set.
      
                 * </p>
      
                 *
      
                 * @param host The View hosting the delegate.
      
                 * @param info The instance to initialize.
      
                 *
      
                 * @see View#onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo)
      
                 *      View#onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo)
      
                 */
      
                public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {
      
                    host.onInitializeAccessibilityNodeInfoInternal(info);
      
                }
      
                /**
      
                 * Called when a child of the host View has requested sending an
      
                 * {@link AccessibilityEvent} and gives an opportunity to the parent (the host)
      
                 * to augment the event.
      
                 * <p>
      
                 * The default implementation behaves as
      
                 * {@link ViewGroup#onRequestSendAccessibilityEvent(View, AccessibilityEvent)
      
                 *  ViewGroup#onRequestSendAccessibilityEvent(View, AccessibilityEvent)} for
      
                 * the case of no accessibility delegate been set.
      
                 * </p>
      
                 *
      
                 * @param host The View hosting the delegate.
      
                 * @param child The child which requests sending the event.
      
                 * @param event The event to be sent.
      
                 * @return True if the event should be sent
      
                 *
      
                 * @see ViewGroup#onRequestSendAccessibilityEvent(View, AccessibilityEvent)
      
                 *      ViewGroup#onRequestSendAccessibilityEvent(View, AccessibilityEvent)
      
                 */
      
                public boolean onRequestSendAccessibilityEvent(ViewGroup host, View child,
      
                        AccessibilityEvent event) {
      
                    return host.onRequestSendAccessibilityEventInternal(child, event);
      
                }
      
                /**
      
                 * Gets the provider for managing a virtual view hierarchy rooted at this View
      
                 * and reported to {@link android.accessibilityservice.AccessibilityService}s
      
                 * that explore the window content.
      
                 * <p>
      
                 * The default implementation behaves as
      
                 * {@link View#getAccessibilityNodeProvider() View#getAccessibilityNodeProvider()} for
      
                 * the case of no accessibility delegate been set.
      
                 * </p>
      
                 *
      
                 * @return The provider.
      
                 *
      
                 * @see AccessibilityNodeProvider
      
                 */
      
                public AccessibilityNodeProvider getAccessibilityNodeProvider(View host) {
      
                    return null;
      
                }
      
                /**
      
                 * Returns an {@link AccessibilityNodeInfo} representing the host view from the
      
                 * point of view of an {@link android.accessibilityservice.AccessibilityService}.
      
                 * This method is responsible for obtaining an accessibility node info from a
      
                 * pool of reusable instances and calling
      
                 * {@link #onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo)} on the host
      
                 * view to initialize the former.
      
                 * <p>
      
                 * <strong>Note:</strong> The client is responsible for recycling the obtained
      
                 * instance by calling {@link AccessibilityNodeInfo#recycle()} to minimize object
      
                 * creation.
      
                 * </p>
      
                 * <p>
      
                 * The default implementation behaves as
      
                 * {@link View#createAccessibilityNodeInfo() View#createAccessibilityNodeInfo()} for
      
                 * the case of no accessibility delegate been set.
      
                 * </p>
      
                 * @return A populated {@link AccessibilityNodeInfo}.
      
                 *
      
                 * @see AccessibilityNodeInfo
      
                 *
      
                 * @hide
      
                 */
      
                public AccessibilityNodeInfo createAccessibilityNodeInfo(View host) {
      
                    return host.createAccessibilityNodeInfoInternal();
      
                }
      
            }
      
            private class MatchIdPredicate implements Predicate<View> {
      
                public int mId;
      
                @Override
      
                public boolean apply(View view) {
      
                    return (view.mID == mId);
      
                }
      
            }
      
            private class MatchLabelForPredicate implements Predicate<View> {
      
                private int mLabeledId;
      
                @Override
      
                public boolean apply(View view) {
      
                    return (view.mLabelForId == mLabeledId);
      
                }
      
            }
      
            private class SendViewStateChangedAccessibilityEvent implements Runnable {
      
                private int mChangeTypes = 0;
      
                private boolean mPosted;
      
                private boolean mPostedWithDelay;
      
                private long mLastEventTimeMillis;
      
                @Override
      
                public void run() {
      
                    mPosted = false;
      
                    mPostedWithDelay = false;
      
                    mLastEventTimeMillis = SystemClock.uptimeMillis();
      
                    if (AccessibilityManager.getInstance(mContext).isEnabled()) {
      
                        final AccessibilityEvent event = AccessibilityEvent.obtain();
      
                        event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED);
      
                        event.setContentChangeTypes(mChangeTypes);
      
                        sendAccessibilityEventUnchecked(event);
      
                    }
      
                    mChangeTypes = 0;
      
                }
      
                public void runOrPost(int changeType) {
      
                    mChangeTypes |= changeType;
      
                    // If this is a live region or the child of a live region, collect
      
                    // all events from this frame and send them on the next frame.
      
                    if (inLiveRegion()) {
      
                        // If we're already posted with a delay, remove that.
      
                        if (mPostedWithDelay) {
      
                            removeCallbacks(this);
      
                            mPostedWithDelay = false;
      
                        }
      
                        // Only post if we're not already posted.
      
                        if (!mPosted) {
      
                            post(this);
      
                            mPosted = true;
      
                        }
      
                        return;
      
                    }
      
                    if (mPosted) {
      
                        return;
      
                    }
      
                    final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis;
      
                    final long minEventIntevalMillis =
      
                            ViewConfiguration.getSendRecurringAccessibilityEventsInterval();
      
                    if (timeSinceLastMillis >= minEventIntevalMillis) {
      
                        removeCallbacks(this);
      
                        run();
      
                    } else {
      
                        postDelayed(this, minEventIntevalMillis - timeSinceLastMillis);
      
                        mPostedWithDelay = true;
      
                    }
      
                }
      
            }
      
            private boolean inLiveRegion() {
      
                if (getAccessibilityLiveRegion() != View.ACCESSIBILITY_LIVE_REGION_NONE) {
      
                    return true;
      
                }
      
                ViewParent parent = getParent();
      
                while (parent instanceof View) {
      
                    if (((View) parent).getAccessibilityLiveRegion()
      
                            != View.ACCESSIBILITY_LIVE_REGION_NONE) {
      
                        return true;
      
                    }
      
                    parent = parent.getParent();
      
                }
      
                return false;
      
            }
      
            /**
      
             * Dump all private flags in readable format, useful for documentation and
      
             * sanity checking.
      
             */
      
            private static void dumpFlags() {
      
                final HashMap<String, String> found = Maps.newHashMap();
      
                try {
      
                    for (Field field : View.class.getDeclaredFields()) {
      
                        final int modifiers = field.getModifiers();
      
                        if (Modifier.isStatic(modifiers) && Modifier.isFinal(modifiers)) {
      
                            if (field.getType().equals(int.class)) {
      
                                final int value = field.getInt(null);
      
                                dumpFlag(found, field.getName(), value);
      
                            } else if (field.getType().equals(int[].class)) {
      
                                final int[] values = (int[]) field.get(null);
      
                                for (int i = 0; i < values.length; i++) {
      
                                    dumpFlag(found, field.getName() + "[" + i + "]", values[i]);
      
                                }
      
                            }
      
                        }
      
                    }
      
                } catch (IllegalAccessException e) {
      
                    throw new RuntimeException(e);
      
                }
      
                final ArrayList<String> keys = Lists.newArrayList();
      
                keys.addAll(found.keySet());
      
                Collections.sort(keys);
      
                for (String key : keys) {
      
                    Log.d(VIEW_LOG_TAG, found.get(key));
      
                }
      
            }
      
            private static void dumpFlag(HashMap<String, String> found, String name, int value) {
      
                // Sort flags by prefix, then by bits, always keeping unique keys
      
                final String bits = String.format("%32s", Integer.toBinaryString(value)).replace('0', ' ');
      
                final int prefix = name.indexOf('_');
      
                final String key = (prefix > 0 ? name.substring(0, prefix) : name) + bits + name;
      
                final String output = bits + " " + name;
      
                found.put(key, output);
      
            }
      
            /** {@hide} */
      
            public void encode(@NonNull ViewHierarchyEncoder stream) {
      
                stream.beginObject(this);
      
                encodeProperties(stream);
      
                stream.endObject();
      
            }
      
            /** {@hide} */
      
            @CallSuper
      
            protected void encodeProperties(@NonNull ViewHierarchyEncoder stream) {
      
                Object resolveId = ViewDebug.resolveId(getContext(), mID);
      
                if (resolveId instanceof String) {
      
                    stream.addProperty("id", (String) resolveId);
      
                } else {
      
                    stream.addProperty("id", mID);
      
                }
      
                stream.addProperty("misc:transformation.alpha",
      
                        mTransformationInfo != null ? mTransformationInfo.mAlpha : 0);
      
                stream.addProperty("misc:transitionName", getTransitionName());
      
                // layout
      
                stream.addProperty("layout:left", mLeft);
      
                stream.addProperty("layout:right", mRight);
      
                stream.addProperty("layout:top", mTop);
      
                stream.addProperty("layout:bottom", mBottom);
      
                stream.addProperty("layout:width", getWidth());
      
                stream.addProperty("layout:height", getHeight());
      
                stream.addProperty("layout:layoutDirection", getLayoutDirection());
      
                stream.addProperty("layout:layoutRtl", isLayoutRtl());
      
                stream.addProperty("layout:hasTransientState", hasTransientState());
      
                stream.addProperty("layout:baseline", getBaseline());
      
                // layout params
      
                ViewGroup.LayoutParams layoutParams = getLayoutParams();
      
                if (layoutParams != null) {
      
                    stream.addPropertyKey("layoutParams");
      
                    layoutParams.encode(stream);
      
                }
      
                // scrolling
      
                stream.addProperty("scrolling:scrollX", mScrollX);
      
                stream.addProperty("scrolling:scrollY", mScrollY);
      
                // padding
      
                stream.addProperty("padding:paddingLeft", mPaddingLeft);
      
                stream.addProperty("padding:paddingRight", mPaddingRight);
      
                stream.addProperty("padding:paddingTop", mPaddingTop);
      
                stream.addProperty("padding:paddingBottom", mPaddingBottom);
      
                stream.addProperty("padding:userPaddingRight", mUserPaddingRight);
      
                stream.addProperty("padding:userPaddingLeft", mUserPaddingLeft);
      
                stream.addProperty("padding:userPaddingBottom", mUserPaddingBottom);
      
                stream.addProperty("padding:userPaddingStart", mUserPaddingStart);
      
                stream.addProperty("padding:userPaddingEnd", mUserPaddingEnd);
      
                // measurement
      
                stream.addProperty("measurement:minHeight", mMinHeight);
      
                stream.addProperty("measurement:minWidth", mMinWidth);
      
                stream.addProperty("measurement:measuredWidth", mMeasuredWidth);
      
                stream.addProperty("measurement:measuredHeight", mMeasuredHeight);
      
                // drawing
      
                stream.addProperty("drawing:elevation", getElevation());
      
                stream.addProperty("drawing:translationX", getTranslationX());
      
                stream.addProperty("drawing:translationY", getTranslationY());
      
                stream.addProperty("drawing:translationZ", getTranslationZ());
      
                stream.addProperty("drawing:rotation", getRotation());
      
                stream.addProperty("drawing:rotationX", getRotationX());
      
                stream.addProperty("drawing:rotationY", getRotationY());
      
                stream.addProperty("drawing:scaleX", getScaleX());
      
                stream.addProperty("drawing:scaleY", getScaleY());
      
                stream.addProperty("drawing:pivotX", getPivotX());
      
                stream.addProperty("drawing:pivotY", getPivotY());
      
                stream.addProperty("drawing:opaque", isOpaque());
      
                stream.addProperty("drawing:alpha", getAlpha());
      
                stream.addProperty("drawing:transitionAlpha", getTransitionAlpha());
      
                stream.addProperty("drawing:shadow", hasShadow());
      
                stream.addProperty("drawing:solidColor", getSolidColor());
      
                stream.addProperty("drawing:layerType", mLayerType);
      
                stream.addProperty("drawing:willNotDraw", willNotDraw());
      
                stream.addProperty("drawing:hardwareAccelerated", isHardwareAccelerated());
      
                stream.addProperty("drawing:willNotCacheDrawing", willNotCacheDrawing());
      
                stream.addProperty("drawing:drawingCacheEnabled", isDrawingCacheEnabled());
      
                stream.addProperty("drawing:overlappingRendering", hasOverlappingRendering());
      
                // focus
      
                stream.addProperty("focus:hasFocus", hasFocus());
      
                stream.addProperty("focus:isFocused", isFocused());
      
                stream.addProperty("focus:isFocusable", isFocusable());
      
                stream.addProperty("focus:isFocusableInTouchMode", isFocusableInTouchMode());
      
                stream.addProperty("misc:clickable", isClickable());
      
                stream.addProperty("misc:pressed", isPressed());
      
                stream.addProperty("misc:selected", isSelected());
      
                stream.addProperty("misc:touchMode", isInTouchMode());
      
                stream.addProperty("misc:hovered", isHovered());
      
                stream.addProperty("misc:activated", isActivated());
      
                stream.addProperty("misc:visibility", getVisibility());
      
                stream.addProperty("misc:fitsSystemWindows", getFitsSystemWindows());
      
                stream.addProperty("misc:filterTouchesWhenObscured", getFilterTouchesWhenObscured());
      
                stream.addProperty("misc:enabled", isEnabled());
      
                stream.addProperty("misc:soundEffectsEnabled", isSoundEffectsEnabled());
      
                stream.addProperty("misc:hapticFeedbackEnabled", isHapticFeedbackEnabled());
      
                // theme attributes
      
                Resources.Theme theme = getContext().getTheme();
      
                if (theme != null) {
      
                    stream.addPropertyKey("theme");
      
                    theme.encode(stream);
      
                }
      
                // view attribute information
      
                int n = mAttributes != null ? mAttributes.length : 0;
      
                stream.addProperty("meta:__attrCount__", n/2);
      
                for (int i = 0; i < n; i += 2) {
      
                    stream.addProperty("meta:__attr__" + mAttributes[i], mAttributes[i+1]);
      
                }
      
                stream.addProperty("misc:scrollBarStyle", getScrollBarStyle());
      
                // text
      
                stream.addProperty("text:textDirection", getTextDirection());
      
                stream.addProperty("text:textAlignment", getTextAlignment());
      
                // accessibility
      
                CharSequence contentDescription = getContentDescription();
      
                stream.addProperty("accessibility:contentDescription",
      
                        contentDescription == null ? "" : contentDescription.toString());
      
                stream.addProperty("accessibility:labelFor", getLabelFor());
      
                stream.addProperty("accessibility:importantForAccessibility", getImportantForAccessibility());
      
            }
      
        }
android/platform_frameworks_base mirrored from https://android.googlesource.com/platform/frameworks/base.git

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